Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Takayuki Shimaoka Last modified date:2020.05.21

Professor / Water and Material Cycles System / Faculty of Engineering


Papers
1. Hiroki Kitamura, Astryd Viandila Dahlan, Yu Tian, Takayuki Shimaoka, Takashi Yamamoto, Fumitake Takahashi, Application of micro-scale correlation analysis to estimate metal speciation and the matrix in municipal solid waste incineration fly ash, Journal of Material Cycles and Waste Management, 10.1007/s10163-020-01001-w, 2020.01, Micro-scale correlation analysis was applied to estimate metal speciation and the matrix in municipal solid waste incineration (MSWI) fly ash in this study. The results showed that dominant metal speciation and the bonding states with fly ash matrix are different in individual fly ash particle. Micro-scale correlation analysis also suggests metal behaviors in fly ash formation processes. Metal oxides likely react with and/or are trapped in Al/Ca/Si-based matrix such as aluminosilicate in the gas phase and then followed by KCl/NaCl adsorption on the surface. Zinc can possibly form other speciation depending on combustion condition. Zinc chlorides (ZnCl2 and/or K2ZnCl4) and Zn spinels (ZnAl2O4 and ZnFe2O4) are not trapped in Al/Ca/Si-based matrix, however, adsorbed on the surface together with KCl/NaCl-based aggregates. Because metal oxides basically combine with and/or are trapped in Al/Ca/Si-based matrix, metal leachability might be controlled by not only metal oxide leachability but also leachability of Al/Ca/Si-based matrix around metal oxides..
2. Astryd Viandila Dahlan, Hiroki Kitamura, Yu Tian, Hirofumi Sakanakura, Takayuki Shimaoka, Takashi Yamamoto, Fumitake Takahashi, Heterogeneities of fly ash particles generated from a fluidized bed combustor of municipal solid waste incineration, Journal of Material Cycles and Waste Management, 10.1007/s10163-020-00973-z, 22, 3, 836-850, 2020.05, Although municipal solid waste incineration fly ash are fine particles and a priori considered as homogeneous, they have complicated structures inside their bodies. This study quantitatively investigated two categories of heterogeneity of fly ash produced from a fluidized bed combustor. They are the heterogeneity of a single fly ash particle body (intra-particle heterogeneity) and heterogeneity among fly ash particles (inter-particle heterogeneity). In the surface and semi-soluble components, Ca has smaller intra-particle heterogeneity than Al and Si. These results and ternary diagram analysis suggest that semi-soluble components consisted of mainly Ca-based matrices such as CaCO3 and unreacted Ca(OH)2 in which aluminosilicate domains. All major elements, excluding Fe and Ti, are 3–66% higher inter-particle heterogeneities on the surface than semi-soluble and insoluble core components. It shows that the surface component of the fly ash is more heterogeneous than other components of fly ash particles. Fly ash from fluidized bed combustor has intra- and inter-particle heterogeneity similar to stoker combustor. Besides, heterogeneity analysis can explain the fly ash formation process. Heterogeneity analysis suggests that Si plays more critical roles in the fly ash formation process of the fluidized bed combustor than that of the stoker combustor. Fly ash has heterogeneous bodies, and it might give non-negligible impacts on the leaching of metals included in fly ash components..
3. Mitali Nag, Takayuki Shimaoka, Teppei Komiya, Optimization of operations for nitrous oxide production and mitigation in aerobic and Aerobic-Anaerobic landfill method on MSW degradation, Science of the Total Environment, 10.1016/j.scitotenv.2019.134045, 696, 2019.12, N2O is a potent greenhouse gas, induced by aeration coupled with leachate recirculation in Municipal Solid Waste (MSW) landfills. In this study, N2O emission was measured in the aerobic and Aerobic-Anaerobic Landfill Method (AALM) with or without leachate recirculation at two aeration rates in synthetic MSW. The experiment was carried out for six Plexiglass® landfill simulation reactors. Low aeration (1.6 l/kg-DM/h) was supplied in RLA, RLAA (Recirculatory) and LAA (non-recirculatory) reactors, while an aeration rate three times higher (4.8 l/kg-DM/h) was performed for RHA, RHAA, and HAA reactors. Based on the supplied leachate quantity, leachate recirculation was performed in five different phases. The results showed that a significant amount of N2O was produced in all reactors. The largest N2O emission of 0.11 and 0.13 g/kg-DM were observed in the RHA and RHAA reactors, respectively. Higher N2O and cumulative GHG was produced in high aeration reactors compared to the low aeration reactors. Recirculated leachate promoted waste stabilization, as reflected in the diminishing CH4 production and other leachate pollutant parameters, especially NH4 +-N. It has been evaluated that in the operative or newly placed waste landfill, in-situ aeration with leachate recirculation exhibits the significant N2O production. However, lower amount of leachate in the later stage beneficial to inhibit the N2O production. It is recommended that in-situ aeration will become more effective after the recovery of CH4 from newly placed waste in an operative landfill for net GHG reduction, especially N2O reduction and early stabilization of landfills..
4. Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Hirofumi Nakayama, Saeed Afsari Fard, Lessons learned from the Ezgeleh–Sarpol Zahab earthquake of November 2017: status of damage and disposal of disaster waste, Waste Disposal & Sustainable Energy, DOI:10.1007/s42768-019-00025-9, 2019.12.
5. Mitali Nag, Takayuki Shimaoka, Teppei Komiya, Optimization of operations for nitrous oxide production and mitigation in aerobic and Aerobic-Anaerobic landfill method on MSW degradation, Science of the Total Environment, DOI:10.1016/j.scitotenv.2019.134045, 696, 2019.12.
6. Rongxing Bian, Teppei Komiya, Takayuki Shimaoka, Xiaoli Chai, Yingjie Sun, Simulative analysis of vegetation on CH4 emission from landfill cover soils
Combined effects of root-water uptake, root radial oxygen loss, and plant-mediated CH4 transport, Journal of Cleaner Production, 10.1016/j.jclepro.2019.06.139, 234, 18-26, 2019.10, Vegetation on landfill cover soil plays a complicated role in methane (CH4) transport, oxidation, and emissions. This study proposes an improved theoretical model that couples the effects of root-water uptake, radial oxygen loss (ROL), plant-mediated CH4 transport, and microbial CH4 oxidation for capturing water-gas-heat flow and CH4 oxidation in landfill unsaturated cover soil. Parametric studies were conducted to investigate the combined effect of transpiration rate (Tp), ROL rate, root architecture, and root depth on CH4 oxidation. The simulation results indicate that the effect of root-water uptake on CH4 oxidation depends on the initial water content. When the water content was <15%, 10% more CH4 was emitted to the atmosphere from vegetation-covered areas than from bare areas. More than 23% CH4 was oxidized when the initial water content was 35% owing to improved aeration. Plants with a parabolic root architecture are more efficient in CH4 oxidation than other root architectures under wet conditions. However, under dry conditions, roots with a parabolic architecture could release more CH4 to the atmosphere. The CH4 oxidation was significantly enhanced when the ROL rate (oxygen released per unit root surface area per unit time) was higher than 1.0 × 10−4 mol/m2·s. Plants are the dominant pathway for CH4 release, and more than 31% of input CH4 was emitted to the atmosphere from plants directly when the initial water content was 35%. This implies that high water-demand plants with parabolic root architectures in dry climate require frequently irrigation to improve the CH4 oxidation efficiency. In wet climate, plant some species with high water-demand, high ROL capacity, and parabolic root architecture would be feasible strategies for landfill CH4 mitigation..
7. Ho Nhut Linh, Hiroto Tamura, Teppei Komiya, Takayuki Shimaoka, EFFECT OF HEAVY RAIN DUE TO CLIMATE CHANGE ON LEACHING BEHAVIOR OF LANDFILL WITH MUNICIPAL SOLID WASTE INCINERATION BOTTOM ASH, Sardinia 2019 17th International Waste Management and Landfill Symposium PROCEEDINGS, 2019.09.
8. Teppei. Komiya, Takeru Saruwatari, Yousuke Hakata, Amirhomayoun Saffarzadeh, HirohumiNakayama, Takayuki Shimaoka,Isamu Sandambata, Takahiro Aoki, T. Nishio, H. Akita, F. Hirosue, SIMULATING THE PERFORMANCE OF “CEMENT-SOLIDIFIED LANDFILL” OF MUNICIPAL SOLID WASTE INCINERATION RESIDUES BY DEMONSTRATION EXPERIMENT, Sardinia 2019 17th International Waste Management and Landfill Symposium PROCEEDINGS, 2019.09.
9. Hasegawa Ryoji, Hirofumi Nakayama,Takayuki Shimaoka , Analyzing waste management considering material flow and economic influence: a case study of non-metallic mineral wastes in Japan, Proceedings of 10th China- Japan Joint Conference on Material Recycling and Waste Management, 2019.08.
10. Mitali Nag, Amirhomayoun Saffarzadeh, Takeshi Nomichi, Takayuki Shimaoka, Hirofumi Nakayama, Assessment on the degree of stabilization of Pb in MSWI fly ash by different particle sizes of waste fishbone hydroxyapatite, Proceedings of 10th China- Japan Joint Conference on Material Recycling and Waste Management, 2019.08.
11. Hirofumi Nakayama, Hirotaka Kato, Takayuki Shimaoka, Study on management of wood debris induced by northern Kyushu heavy rain in July 2017 using aerial survey and 3D modeling, Proceedings of 10th China- Japan Joint Conference on Material Recycling and Waste Management, 2019.08.
12. Hiroto Tamura, Ho Nhut Linh, Teppei Komiya, Takayuki Shimaoka, Influence of heavy rain due to climate change on leachate behavior of landfill with municipal solid waste incineration residues, Proceedings of 10th China- Japan Joint Conference on Material Recycling and Waste Management, 2019.08.
13. Weihua Li, Yingjie Sun, Yaomin Huang, Takayuki Shimaoka, Huawei Wang, Ya nan Wang, Li Ma, Dalei Zhang, Evaluation of chemical speciation and environmental risk levels of heavy metals during varied acid corrosion conditions for raw and solidified/stabilized MSWI fly ash, Waste Management, 10.1016/j.wasman.2019.02.033, 87, 407-416, 2019.03, In this work, the leaching pattern, chemical speciation, and environmental risks of various heavy metals (Pb, Zn, Cu, Cd, Cr, and Ni) were investigated synchronously under different acid corrosion conditions through end-point pH leaching experiments. The heavy metals were present in raw, stabilized (phosphoric acid; chelating agent), and solidified (Portland cement) municipal solid waste incineration (MSWI) fly ash. The results showed that the stabilization and solidification pre-treatment could effectively decrease the leaching of most heavy metals. However, phosphoric acid stabilization and Portland cement solidification increased the solubility of Ni and Pb/Cu/Cd under low end-point pH conditions, while that of Cr and Pb increased under high end-point pH conditions. Overall, the leaching pattern of heavy metals was not affected by the addition of binders/additives. The results from speciation analysis showed that the bioavailable fractions (exchangeable and carbonate-bound) were leached out from initial raw or solidified/stabilized fly ash after distilled water leaching. However, with the decrease in end-point pH levels, the bioavailable fractions increased again due to the increase in acid corrosion on metal-bearing mineral matrixes. The risk assessment results indicated that, after exposing the raw or solidified/stabilized fly ash to highly acidic conditions, not only the high-content Pb/Zn/Cu, but also some low-content Cd posed potential risks to the environment. During the leaching process, under extremely acidic conditions, the increased environmental risks posed by Pb/Zn/Cu/Cd in residual fly ash solids were greatly ascribed to the increase in bioavailable fractions, which might result in the re-leaching of some heavy metals to the environment..
14. Hiroki Kitamura, Astryd Viandila Dahlan, Yu Tian, Takayuki Shimaoka, Takashi Yamamoto, Fumitake Takahashi, Intra- and inter-particle heterogeneity of municipal solid waste incineration fly ash particles, Journal of Material Cycles and Waste Management, 10.1007/s10163-019-00853-1, 2019.01, This study firstly investigated elemental heterogeneity of municipal solid waste incineration (MSWI) fly ash particles. Two types of heterogeneities were measured quantitatively focusing on three structural components of fly ash particles. They are internal heterogeneity of individual fly ash particles (intra-particle heterogeneity) and inter-particle heterogeneities among fly ash particles. On the surface of fly ash particles, Cl, K, and Na have 0–82% larger intra-particle heterogeneities than Al, Ca, and Si owing to KCl/NaCl-based aggregates. Smaller intra-particle heterogeneity of Ca in semi-soluble component than those of Al and Si suggest that semi-soluble Al/Ca/Si-based matrices around insoluble cores are Ca-based materials including aluminosilicate domains. Inter-particle heterogeneities of Al, Ca, and Si in semi-soluble and insoluble components are 9–40% and 49–352% higher than those of fly ash particle surface, respectively. Inter-particle heterogeneity analysis also suggests that insoluble components mainly consists of Si-, Al-, or Ca-rich cores. MSWI fly ash particles have both internal heterogeneities inside their bodies and also are heterogeneous in inter-particle level. When MSWI fly ash becomes wet during chelate treatment, it changed intra-particle heterogeneity as well as inter-particle heterogeneity. Their variations were contrast depending on element and site (fly ash particle component)..
15. Takayuki Shimaoka, Hirofumi Nakayama, Yasuyuki Kimura, Ichiro Hiura, Akira Kimura, Monitoring of capping for radionuclide-contaminated wastes using remote-sensing technology, The 11th International Conference on Geosynthetics, 2018.09.
16. Takayuki Shimaoka, Koji Kumagai, Takeshi Katsumi, Michio Iba, Kohei Yokota, Design of barrier systems for interim storage facilities to contain nuclide contaminated soils and wastes, The 11th International Conference on Geosynthetics, 2018.09.
17. Mitali Nag, Takayuki Shimaoka, Teppei Komiya, Influence of operations on leachate characteristics in the Aerobic-Anaerobic Landfill Method, Waste Management, 10.1016/j.wasman.2018.06.044, 78, 698-707, 2018.08, Landfill aeration is an effective technique for the controlled and sustainable conversion of conventional anaerobic landfills into a biologically stabilized state associated with a significantly lowered or the near elimination of the landfill gas emission potential. For in-situ leachate treatment recycling back the generated leachate in the bioreactor is also a promising technique for reducing pollutants and cost of ex-situ treatment as well. This research has been conducted to ascertain the in-situ treatment of leachate in Aerobic Anaerobic Landfill Method (AALM) compared with aerobic landfill and evaluated the impacts of various leachate recirculation regimes on MSW degradation and to provide data for successful operation in landfill sites. The experiment was conducted using six Plexiglass® landfill simulation reactors with a height of 100 cm and a diameter of 15 cm. Air was injected at the rates of 1.6 l/kg DM/h (Low aeration rate) for reactors R-LA, R-LAA (recirculatory) and LAA (non-recirculatory) and 4.8 l/kg DM/h (High aeration rate) in R-HA, R-HAA (recirculatory), and HAA (non-recirculatory) until day 242. It has been evaluated that R-HAA at high aeration rate achieved higher leachate quantity reduction (36.9%) than low aeration rate reactor R-LAA (19.6%) and AALM provides a better solution to control the temperature within the landfill body. The final NH4 +-N concentration in R-HA (214.5 mg/l) was eight times lower than in the R-LA (1741.0 mg/l) reactor, and R-HAA (842.5 mg/l) was about three times lower than R-LAA (2315.4 mg/l) reactor on day 242. The change in leachate recirculation amount at varying moisture content positively affected the stabilization process and in-situ leachate treatment efficiency. The combination of both technologies (intermittent aeration and leachate recirculation) is a feasible way for in-situ leachate treatment, decrease the cost of further ex-situ leachate treatment as well as a viable and cost-saving alternative to continuous aeration..
18. Toshifumi Mukunoki, Ta Thi Hoai, Daisuke Fukushima, Teppei Komiya, Takayuki Shimaoka, Physical and mechanical properties of municipal solid waste incineration residues with cement and coal fly ash using X-ray Computed Tomography scanners, Frontiers of Structural and Civil Engineering, 10.1007/s11709-018-0502-6, 640-652, 2018.08.
19. Takeru SARUWATARI, Teppei KOMIYA, Hirofumi NAKAYAMA, Takayuki SHIMAOKA, Isamu SANDAMBATA, Takahiro AOKI, Tatsufumi NISHIO, Hiroyuki AKITA, Fuminori HIROSUE, Demonstrational experiment on cement-solidification style final disposal of municipal solid waste incineration residues, The 9th China-Japan Joint Conference on Material Recycling and Waste Management, 2018.08.
20. Hiroki Kitamura, Astryd Viandila Dahlan, Yu Tian, Takayuki Shimaoka, Takashi Yamamoto, Fumitake Takahashi, Impact of secondary generated minerals on toxic element immobilization for air pollution control fly ash of a municipal solid waste incinerator, Environmental Science and Pollution Research, 10.1007/s11356-018-1959-5, 25, 21, 20700-20712, 2018.07, Impacts of secondary generated minerals on mineralogical and physical immobilization of toxic elements were investigated for chelate-treated air pollution control (APC) fly ash of a municipal solid waste incinerator. Scanning electron microscope (SEM) observation showed that ettringite was generated after the moistening treatment with/without chelate. Although ettringite can incorporate toxic elements into its structure, elemental analysis by energy dispersive X-ray could not find concentrated points of toxic elements in ettringite structure. This implies that mineralogical immobilization of toxic element by the encapsulation to ettringite structure seems to be limited. Physical immobilization was also investigated by SEM observation of the same APC fly ash particles before and after the moistening treatment. The transfer of soluble elements was inhibited only when insoluble minerals such as gypsum were generated and covered the surface of fly ash particles. Neoformed insoluble minerals prevented soluble elements from leaching and transfer. However, such physical immobilization seems to be limited because insoluble mineral formation with surface coverage was monitored only one time of more than 20 observations. Although uncertainty owing to limited samples with limited observations should be considered, this study concludes that mineralogical and physical immobilization of toxic elements by secondary minerals is limited although secondary minerals are always generated on the surface of APC fly ash particles during chelate treatment..
21. Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Influence of ignition of waste fishbone on enhancing heavy metal stabilization in municipal solid waste incineration (MSWI) fly ash, Journal of Cleaner Production, 10.1016/j.jclepro.2018.03.301, 189, 396-405, 2018.07, Natural fishbone was found effective for heavy metal stabilization (particularly Pb) in municipal solid waste incineration (MSWI) fly ash in a previous study presented by the authors. Natural fishbone containing hydroxyapatite (HAP) could stabilize Pb and Zn under appropriate conditions; however, undesirable release of Cu and P occurred in the presence of non-HAP fraction. Therefore, ignition of fishbone for optimizing this technique was investigated. Based on thermogravimetry and differential thermal analysis, mass loss test, and X-ray diffractometry, it was found that ignition not only removed the non-HAP fraction, but also increased the crystallinity of HAP in fishbone as a function of temperature. Various ignition temperatures were carefully evaluated based on the performance of candidate fishbones in metal stabilization under designated conditions. Accordingly, fishbone ignited at 430 °C (IGN-430) was selected. Both natural and IGN-430 fishbones were involved in the stabilization of heavy metals in fly ash under various scenarios. IGN-430 provided more efficient metal stabilization than natural fishbone under the same conditions, because it supplied more fishbone HAP at the same dose. The non-HAP fraction in fishbone was the main source of released P in the leachate and presumably facilitated Cu and Zn release from fly ash. This facilitation hindered metal stabilization, the influence of which was greater at higher liquid condition. Consequently, IGN-430 fishbone is preferred to natural fishbone used for metal stabilization in fly ash, as it provided a more efficient metal stabilization without undesirable release of the other elements. A solid-like condition was even more beneficial for heavy metal stabilization in fly ash by fishbone HAP..
22. Teppei KOMIYA, Takeru SARUWATARI, Hirofumi NAKAYAMA, Takayuki SHIMAOKA, Isamu SANDAMBATA, Takahiro AOKI, Tatsufumi NISHIO, Hiroyuki AKITA, Fuminori HIROSUE, Demonstrational Experiment on Environmental Safety of Cement-Solidification Style Final Disposal of Municipal Solid Waste Incineration Residues, The 22nd Korea-Japan International Symposium of Korea Society of Waste Management, 2018.05.
23. Naoki SHIRAISHI, Sonia Muradia SHARMA, Teppei KOMIYA, Takayuki SHIMAOKA, Optimum Conditions of Carbon Dioxide Exposure for Dechlorination of Municipal Solid Waste Incineration Bottom Ash, The 22nd Korea-Japan International Symposium of Korea Society of Waste Management, 2018.05.
24. Masayasu Miyake , Teppei Komiya , Amirhomayoun Saffarzadeh, Takayuki Shimaoka, EVALUATING THE CRUCIAL FACTORS AFFECTING HYDROGEN GAS GENERATION FROM MUNICIPAL SOLID WASTE
INCINERATION BOTTOM ASH (MSWIBA), Detritus, 2018.05.
25. Yousuke Hakata, Teppei Komiya, Hirofumi Nakayama, Takayuki Shimaoka, Influence of microbial activity in micro pores on durability of cement-solidified solid waste incineration
Residues, The 9th China-Japan Joint Conference on Material Recycling and Waste Management, 2018.05.
26. Hirofumi NAKAYAMA, Takayuki SHIMAOKA, Environmental and economic evaluation of hydrogen recovery from municipal solid waste incineration residue, The 9th China-Japan Joint Conference on Material Recycling and Waste Management, 2018.05.
27. Arumugam Nithiya, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Hydrogen gas generation from metal aluminum-water interaction in municipal solid waste incineration (MSWI) bottom ash, Waste Management, 10.1016/j.wasman.2017.06.030, 73, 342-350, 2018.03, In the present research, municipal solid waste incineration (MSWI) bottom ash (BA) residues from three incinerators (N, K, and R) in Japan were collected for hydrogen gas generation purpose. The samples were split into four particle size fractions: (1) d ≤ 0.6, (2) 0.6 ≤ d ≤ 1.0, (3) 1.0 ≤ d ≤ 2.0, and (4) 2.0 ≤ d ≤ 4.75 mm for the characterization of metal aluminum, the relationship between the present metal aluminum and hydrogen gas production, and the influence of external metal aluminum on the enhancement of hydrogen gas. The batch experiments were performed for each BA fraction under agitated (200 rpm) and non-agitated conditions at 40 °C for 20 days. The highest amount of hydrogen gas (cumulative) was collected under agitation condition that was 39.4, 10.0, and 8.4 L/kg of dry ash for N2, R2, and K2 (all fraction 2), respectively. To take the benefit of the BA high alkalinity (with initial pH over 12), 0.1 and 1 g of household aluminum foil were added to the fractions 2 and 3. A Significantly larger amount of hydrogen gas was collected from each test. For 0.1 g of aluminum foil, the cumulative amount of gas was in the range of 62 to 78 L/kg of dry ash and for 1 g of aluminum foil the cumulative amount of hydrogen was in the range of 119–126 L/kg of dry ash. This indicated that the hydrogen gas yield was significantly a function of supplementary aluminum and the intrinsic alkaline environment of the BA residues rather than ash source or particle size..
28. Toshifumi Mukunoki, Ta Thi Hoai, Daisuke Fukushima, Teppei Komiya, Takayuki Shimaoka, Physical and mechanical properties of municipal solid waste incineration residues with cement and coal fly ash using X-ray Computed Tomography scanners, Frontiers of Structural and Civil Engineering, 10.1007/s11709-018-0502-6, 2018.01, A significant volume of Municipal Solid Waste incineration bottom ash and fly ash (i.e., incineration residues) are commonly disposed as landfill. Meanwhile, reclamation of landfill sites to create a new land space after their closure becomes an important goal in the current fewer and fewer land availability scenario in many narrow countries. The objective of this study is to reclaim incineration residue materials in the landfill site by using cement and coal fly ash as stabilizers aiming at performing quality check as new developed materials before future construction. Indeed, physical and mechanical properties of these new materials should be initially examined at the micro scale, which is the primary fundamental for construction at larger scale. This research examines quantitative influences of using the combination of cement and coal fly ash at different ratio on the internal structure and ability of strength enhancement of incineration residues when suffering from loading. Couple of industrial and micro-focus X-ray computed tomography (CT) scanners combined with an image analysis technique were utilized to characterize and visualize the behavior and internal structure of the incineration residues-cement-coal fly ash mixture under the series of unconfined compression test and curing period effect. Nine types of cement solidified incineration residues in term of different curing period (i.e., 7, 14, 28 days) and coal fly ash addition content (i.e., 0%, 9%, 18%) were scanned before and after unconfined compression tests. It was shown that incineration residues solidified by cement and coal fly ash showed an increase in compression strength and deformation modulus with curing time and coal fly ash content. Three-dimension computed tomography images observation and analysis confirmed that solidified incineration residues including incineration bottom and fly ash as well as cement and coal fly ash have the deliquescent materials. Then, it was studied that stabilized parts play a more important role than spatial void distribution in increment or reduction of compression strength..
29. Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Utilization of waste natural fishbone for heavy metal stabilization in municipal solid waste incineration fly ash, Journal of Cleaner Production, 10.1016/j.jclepro.2017.11.099, 172, 3111-3118, 2018.01, Waste fishbone that is a rich source of hydroxyapatite (HAP) was investigated for the stabilization of heavy metals (mainly Pb) in municipal solid waste incineration (MSWI) fly ash, which has not been particularly studied to date. In the present study, the original status of fishbone and fly ash was preserved. The stabilization was initially conducted during a leaching process (Scenario A). Greater doses of fishbone and longer contact times benefited the stabilization in this scenario, and the highest Pb stabilization efficiency reached 59.31% after a 72 h-leaching process at fishbone dose of 100% (w/w). The abundant supply of Pb relative to fishbone HAP might affect the efficient stabilization. Therefore, the influence of liquid/solid (L/S) was examined for improving the stabilization under a settling condition (Scenario B). Lower L/S conditions were beneficial to the stabilization, and the highest Pb stabilization efficiency achieved was 66.35% at L/S of 1 mL/g for 24 h of settling when fishbone dose was 50% (w/w). Additionally, as the second most leachable metal, Zn was also considerably stabilized at L/S < 1.5 mL/g (solid-like conditions) in Scenario B. Cu in the leachates of both scenarios increased in the presence of fishbone. The facilitation of Cu release undesirably hindered Pb stabilization; however, this impediment presumably occurred during the leaching process rather than settling period. The solid-like condition was found to be more favorable for using fishbone HAP on the stabilization of heavy metals in fly ash. L/S and settling period were identified as the critical factors for the efficient stabilization of Pb and Zn, respectively. It is suggested that this technique not only helps treat MSWI fly ash in a low-cost and environmental-friendly approach, but also helps reduce the problems associated with waste fishbone disposal..
30. Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Influence of ignition of waste fishbone on enhancing heavy metal stabilization in municipal solid waste incineration (MSWI), Journal of Cleaner Production, 2018.01.
31. Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Hirofumi Nakayama, Takao Hanashima, Kentaro Yamaguchi, Kazutoshi Manabe, Tasks and problems involved in the handling of disaster waste upon April 2016 Kumamoto Earthquake, Japan, Natural Hazards, 10.1007/s11069-017-3021-1, 89, 3, 1273-1290, 2017.12, A series of earthquakes struck Kumamoto City area, SW Japan, including a magnitude 7.3 (mainshock) at 01:25 (Japan Standard Time: JST) on April 16 and a foreshock with a magnitude 6.5 at 21:26 JST on April 14, 2016. The earthquakes tremendously damaged the vulnerable structures and left a huge amount of disaster waste. Immediately after the earthquake, the Kumamoto Prefectural Government designated a number of locations for the erection of temporary waste storage facilities essentially in the vicinity of the most affected zones for the purpose of removing of the disaster waste from the damaged areas and their accumulation in the properly managed sites. The facilities provided sufficient ground for the temporary storage, handling, early sorting, and crushing of metallic objects, wood and its derivatives, glass, soil and rock, concrete, and household appliances. Mashiki Machi (town) and Nishihara Village were the nearest settlements to the epicenters of Kumamoto earthquakes that were severely damaged. The estimated amount of the disaster waste generated in Kumamoto Prefecture was about 2.89 million tons, the recycling and disposal of which must be completed within two years from the date of earthquake. Among various waste disposal facilities, the Nishihara Village storage facility was selected as the target for in-depth site investigation and disaster waste estimation. Drone survey was also conducted at different intervals at Nishihara Village facility with emphasis on wood debris. The drone technique employed in this survey demonstrated a reliable method for capturing high-resolution images from the selected site in a remarkably short period of time, and a relatively quick measure for estimating the amount of the disaster waste immediately after the disaster occurred..
32. M.Miyake, T.Komiya, A.Saffarezadeh, T.Shimaoka, Evaluating the curecial factors affecting hydrogen gas generation from municipal solod waste incineration bottom ash(MSWIBA), proccedings of the 16th international waste management and landfill symposium(Sardinia2017), 2017.10.
33. K.Miki, T.Komiya, S.Muradia, T.Shimaoka, Accelerated stabilization of MSW incineration bottom ash in landfill by oxygen ultrafine bubbles, proccedings of the 16th international waste management and landfill symposium(Sardinia2017), 2017.10.
34. Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, UTILIZATION OF WASTE NATURAL FISHBONE FOR HEAVY METAL STABILIZATION IN MUNICIPAL SOLID WASTE INCINERATION (MSWI) FLY ASH, proccedings of the 16th international waste management and landfill symposium(Sardinia2017), 80-83, 2017.10.
35. Hirofumi Nakayama, Yasuyuki Kimura, Takayuki Shimaoka, Ryoichi Furuta, Ichiro Hiura and Akira Kimura , Estimation of strain and stress on capping liner of waste storage sites by using SfM-based 3D modeling, The 8th China-Japan Joint Conference on Material Recycling and Solid Waste Management, Hangzhou, Chin, 9-14, 2017.09.
36. Takayuki Shimaoka , Application of superfluidized treatment to landfilling of municpal solid waste incieratino residues (MSWIRS), The 8th China-Japan Joint Conference on Material Recycling and Solid Waste Management, Hangzhou, Chin, 2017.09.
37. Hasegawa Ryoji, Hirofumi Nakayama and Takayuki Shimoaka, Analyzing material flow and value added associated with non-metallic mineral wastes in Japan, Journal of Economic Structures 2017 , 2017.09.
38. Yunmei Wei, Xiaoxia Mei, Dezhi Shi, Guotao Liu, Li Li, Takayuki Shimaoka, Separation and characterization of magnetic fractions from waste-to-energy bottom ash with an emphasis on the leachability of heavy metals, Environmental Science and Pollution Research, 10.1007/s11356-017-9145-8, 24, 17, 14970-14979, 2017.06, Magnetic fractions were extracted from pulverized waste-to-energy (WTE) bottom ashes using a combined wet-dry extraction method. The resulting magnetic and non-magnetic fractions were subjected to compositional, mineralogical, and redox state analyses by X-ray diffraction (XRD), X-ray fluorescence, and X-ray photoelectron spectroscopy (XPS), respectively. The distribution and leaching toxicity of heavy metals were assessed to evaluate potential effects on the environment. Compositional analyses revealed that Fe accounted for 35% of the magnetic fraction of pulverized ashes, which was approximately seven times that of the raw ash. In addition to Fe, elemental Ni, Mn, and Cr were also significantly enriched in the magnetic fractions. The mineralogical analysis determined that Fe was primarily present as hematite and magnetite, and metallic iron was also identified in the magnetic fraction samples. The XPS analysis further proved the existence of zero-valence Fe. However, a significant amount of Fe remained in the non-magnetic fractions, which could partially be ascribed to the intergrowth structure of the various minerals. The elevated concentrations of toxicity characteristic leaching procedure (TCLP)-extracted Mn, Ni, Cr, Cu, Pb, and Zn were primarily ascribed to the lower buffering capability of the magnetic fractions, with the enrichment of Mn, Ni, and Cr in the magnetic fractions also contributing to this elevation..
39. Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Influence of ignition process on mineral phase transformation in municipal solid waste incineration(MSW)fly ash:implications for estimating loss-on-ignition(LOI), Waste Management, Vol.59, pp.222-228, 2017.01.
40. Asiyanthi T. Lando, Hirofumi Nakayama, Takayuki Shimaoka, Application of Portable Gas Detector in Point and Scanning Method to Estimate Spatial Distribution of Methane Emission in Landfill, Waste Management, Vol.59, pp. 255–266, 2017.01.
41. Asiyanthi Tabran Lando, Hirofumi Nakayama, Takayuki Shimaoka, Application of portable gas detector in point and scanning method to estimate spatial distribution of methane emission in landfill, Waste Management, 10.1016/j.wasman.2016.10.033, 59, 255-266, 2017.01, Methane from landfills contributes to global warming and can pose an explosion hazard. To minimize these effects emissions must be monitored. This study proposed application of portable gas detector (PGD) in point and scanning measurements to estimate spatial distribution of methane emissions in landfills. The aims of this study were to discover the advantages and disadvantages of point and scanning methods in measuring methane concentrations, discover spatial distribution of methane emissions, cognize the correlation between ambient methane concentration and methane flux, and estimate methane flux and emissions in landfills. This study was carried out in Tamangapa landfill, Makassar city-Indonesia. Measurement areas were divided into basic and expanded area. In the point method, PGD was held one meter above the landfill surface, whereas scanning method used a PGD with a data logger mounted on a wire drawn between two poles. Point method was efficient in time, only needed one person and eight minutes in measuring 400 m2 areas, whereas scanning method could capture a lot of hot spots location and needed 20 min. The results from basic area showed that ambient methane concentration and flux had a significant (p < 0.01) positive correlation with R2 = 0.7109 and y = 0.1544 x. This correlation equation was used to describe spatial distribution of methane emissions in the expanded area by using Kriging method. The average of estimated flux from scanning method was 71.2 g m−2 d−1 higher than 38.3 g m−2 d−1 from point method. Further, scanning method could capture the lower and higher value, which could be useful to evaluate and estimate the possible effects of the uncontrolled emissions in landfill..
42. Yunmei Wei, Jingyuan Li, Dezhi Shi, Guotao Liu, Youcai Zhao, Takayuki Shimaoka, Environmental challenges impeding the composting of biodegradable municipal solid waste
A critical review, Resources, Conservation and Recycling, 10.1016/j.resconrec.2017.01.024, 122, 51-65, 2017.01, Biodegradable material, primarily composed of food waste, accounts for 40–70 wt% of municipal solid waste (MSW) in developing countries. Therefore, to establish a sustainable waste management system, it is essential to separate and recycle biodegradable organic material from the municipal waste stream. Of all the recycling methods, composting is recommended due to its environmental and economic benefits. However, compared with readily recyclable materials (e.g., paper, metals, etc.), recycling/composting biodegradable MSW presents a great challenge to furthering the promotion of waste recycling. This review provides a systematic analysis of organic waste sorting and recycling/composting practices in several countries: the UK, US, Japan, and China. Compared to the great efforts that have been made in developed countries for the promotion of waste composting, much less has been achieved in developing countries. For example, the MSW composting rate in China decreased from 10% to less than 2% in the past 15 years, and similar trends may exist in other developing countries. Therefore, it is essential to identify the barriers that impede waste composting and predict developing trends. This article emphasizes environmental challenges (i.e., odor, bioaerosols, and heavy metals), focusing on their generation and control strategies, in an effort to identify barriers hindering MSW composting. Successful practices in several European countries suggest that source-separated composting presents many advantages over mechanical-separated composting. This may partially be ascribed to the fact that source separation of organic waste can prevent contact with heavy metal-bearing items, resulting in the production of high-quality compost. Mixed collection MSW normally contains significantly higher concentrations of heavy metals, which could affect the marketing of composting products. Moreover, source separation of organic waste can minimize waste pretreatment operations, leading to lower bioaerosol and malodor generation during composting. Implementing source separation of MSW in more countries would increase the amount of organic waste available for composting. In addition, attention should focus on secondary pollutant production for proper composting management. Finally, setting standards for end product quality control is highly recommended for controlling both marketing and environmental risks..
43. Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Influence of ignition process on mineral phase transformation in municipal solid waste incineration (MSWI) fly ash
Implications for estimating loss-on-ignition (LOI), Waste Management, 10.1016/j.wasman.2016.09.028, 59, 222-228, 2017.01, This research focused on the mineral phase transformation under varied ignition conditions with the objective of estimating loss-on-ignition (LOI) parameter in municipal solid waste incineration (MSWI) fly ash residues. LOI is commonly used to measure the volatile species, unburned carbon and moisture in the solid materials. There are criteria for LOI measurement in some research fields, while there is no standard protocol for LOI measurement in MSWI fly ash. Using thermogravimetry technique, the ignition condition candidates were proposed at 440/700/900 °C for 1 and 2 h. Based on X-ray diffractometry results, obvious mineral phase transformation occurred as a function of ignition temperature variation rather than ignition time. Until 440 °C, only some minor phases disappeared comparing with the original state. Significant mineral phase transformations of major phases (Ca- and Cl-based minerals) occurred between 440 and 700 °C. The mineral phase transformation and the occurrence of newly-formed phases were determined not only by the ignition condition but also by the content of the co-existing components. Mineral phase components rarely changed when ignition temperature rose from 700 to 900 °C. Consequently, in order to prevent critical damages to the original mineralogical composition of fly ash, the lowest ignition temperature (440 °C) for 2 h was suggested as an ideal measurement condition of LOI in MSWI fly ash..
44. Chuanfu Wu, Takayuki Shimaoka, Hirofumi Nakayama, Teppei Komiya, Xiaoli Chai, Stimulation of waste decomposition in an old landfill by air injection, Bioresource Technology, Vol.222, pp.66-74, 2016.12.
45. Chuanfu Wu, Takayuki Shimaoka, Hirofumi Nakayama, Teppei Komiya, Xiaoli Chai, Stimulation of waste decomposition in an old landfill by air injection, Bioresource Technology, 10.1016/j.biortech.2016.09.078, 222, 66-74, 2016.12, Three pilot-scale lysimeters were operated for 4.5 years to quantify the change in the carbon and nitrogen pool in an old landfill under various air injection conditions. The results indicate that air injection at the bottom layer facilitated homogeneous distribution of oxygen in the waste matrix. Substantial total organic carbon (TOC) decomposition and methane generation reduction were achieved. Considerable amount of nitrogen was removed, suggesting that in situ nitrogen removal via the effective simultaneous nitrification and denitrification mechanism is viable. Moreover, material mass change measurements revealed a slight mass reduction of aged MSW (by approximately 4.0%) after 4.5 years of aeration. Additionally, experiments revealed that intensive aeration during the final stage of the experiment did not further stimulate the degradation of the aged MSW. Therefore, elimination of the labile fraction of aged MSW should be considered the objective of in situ aeration..
46. Hirofumi Nakayama, Takayuki Shimaoka, Teppei Komiya, Kiminori Sakusabe, Development of Thermo-Graph Inspection for Geomembrane Seam Evaluation and its Application to Landfill Constraction, Proceedings of 6th Asian Regional Conference on Geosynthetics - Geosynthetics for Infrastructure Development, New Delhi, India, pp.651-656, 2016.11.
47. Teppei Komiya, Hirofumi Nakayama, Takayuki Shimaoka, Thermal source positional estimation in solid waste landfill using surface hot spots’ temperature and position, The proceedings of APLAS Hong Kong 2016, The 9th Asia-Pacific Landfill Symposium, USB memory (A6-6, 4pages), 2016.11.
48. Mitali Nag, Takayuki Shimaoka, Teppei Komiya, Nitrous oxide production during nitrification from organic solid waste under temperature and oxygen conditions, Environmental Technology (United Kingdom), 10.1080/09593330.2016.1168485, 37, 22, 2890-2897, 2016.11, Landfill aeration can accelerate the biological degradation of organic waste and reduce methane production; however, it induces nitrous oxide (N2O), a potent greenhouse gas. Nitrification is one of the pathways of N2O generation as a by-product during aerobic condition. This study was initiated to demonstrate the features of N2O production rate from organic solid waste during nitrification under three different temperatures (20°C, 30°C, and 40°C) and three oxygen concentrations (5%, 10%, and 20%) with high moisture content and high substrates’ concentration. The experiment was carried out by batch experiment using Erlenmeyer flasks incubated in a shaking water bath for 72 h. A duplicate experiment was carried out in parallel, with addition of 100 Pa of acetylene as a nitrification inhibitor, to investigate nitrifiers’ contribution to N2O production. The production rate of N2O ranged between 0.40 × 10−3 and 1.14 × 10−3 mg N/g-DM/h under the experimental conditions of this study. The rate of N2O production at 40°C was higher than at 20°C and 30°C. Nitrification was found to be the dominant pathway of N2O production. It was evaluated that optimization of O2 content is one of the crucial parameters in N2O production that may help to minimize greenhouse gas emissions and N turnover during aeration..
49. Shuo Yang, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Takashi Kawano, Yoshitada Kakuta, The impact of thermal treatment and cooling methods on municipal solid waste incineration bottom ash with an emphasis on Cl, Environmental Technology (United Kingdom), 10.1080/09593330.2016.1155651, 37, 20, 2564-2571, 2016.10, Municipal solid waste incineration (MSWI) bottom-ash products possess qualifications to be utilized in cement production. However, the instant use of bottom ash is inhibited by a number of factors, among which the chlorine (Cl) content is always strictly restricted. In this paper, the unquenched MSWI bottom ash was used as the experimental substance, and the influences of thermal treatment and cooling methods on the content and existence of Cl in the ash residues were investigated. The characterization of the MSWI bottom-ash samples examined by utilizing X-ray diffraction, optical microscopy, scanning electron microscopy/energy dispersive X-ray spectroscopy. The experimental results show that as a function of thermal treatment, the reduction rate of Cl is slight below 15.0%, which is relatively low compared with water washing process. Different cooling methods had impacts on the existing forms of Cl. It was understood that most of Cl existed in the glass phase if the bottom ash was air cooled. Contrarily in case of water-quenched bottom ash, Cl could also be accumulated in the newly-formed quench products as chloride salts or hydrate substances such as Friedel's salt..
50. Mitali Nag, Takayuki Shimaoka, Teppei Komiya, Impact of intermitten aerations on leachate quality and greenhouse gas reduction in the aerobic-anaerobic laandfill method, Waste Management, Vol.55, pp.71-82, 2016.09.
51. Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Evaluting The Effectivity of Using Natural Fishbone Hydroxyapatite on Lead Stabilization in Municipal Solid Waste Incineration (MSWI)Fly Ash, 5th International Conference on INDUSTRIAL & HAZARDOUS WASTE MANAGEMENT (CRETE2016), pp.241-242, 2016.09.
52. Hirofumi Nakayama, Takayuki Shimaoka, Study on factors influencing price of industrial waste treatment and disposal in Japan, The Joint Socio-Economic Metabolism conference and Asia-Pacific conference of the International Society for Industrial Ecology, pp.5C-4, 2016.09.
53. Mitali Nag, Takayuki Shimaoka, Teppei Komiya, Impact of intermittent aerations on leachate quality and greenhouse gas reduction in the aerobic–anaerobic landfill method, Waste Management, 10.1016/j.wasman.2015.10.018, 55, 71-82, 2016.09, The aerobic–anaerobic landfill method (AALM) is a novel approach in solid waste management that could shorten the landfill post-closure period and minimize the environmental loads. In this study, the aerobic–anaerobic landfill method was evaluated by using intermittent aeration. In addition, the nitrification–denitrification process was assessed as a means of reducing the emission of greenhouse gases (GHGs) and improving the leachate quality during the degradation of the organic solid waste. The leachate quality and the gas composition in each of the reactors were measured during the experimental period (408 days). The aeration process entailed the injection of air into plexiglass cylinders (200 cm height × 10 cm diameter), filled with fresh organic solid waste collected from a composting plant. Different aeration routines were applied, namely, continuous aeration (aerobic reactor A), aeration for three days/week (aerobic–anaerobic reactor B), aeration for 6 h/day (aerobic–anaerobic reactor C), and no aeration (non-aerated reactor D). It was found that aerobic reactor A produced the best results in terms of reduction of GHGs and improvement of the leachate quality. The aerobic–anaerobic reactor C was found to be more effective than reactor B in respect of both the emission of GHGs and the leachate quality; moreover, compared with aerobic reactor A, energy costs were reduced by operating this reactor. The transition period phenomenon was investigated during an intensive seven-day experiment conducted on the discharged leachate obtained from aerobic–anaerobic reactors B and C. The experiment concerned the differences in the composition of the gas during the aeration and the non-aeration periods. It was found that the transition period between the aeration and non-aeration cycles, which followed the simultaneous nitrification–denitrification had a considerable effect on the leachate quality of both the reactors. The results indicated that AALM has the potential to reduce leachate pollutants and the emission of GHGs. Furthermore, the occurrence of simultaneous nitrification–denitrification presents the prospect that intermittent aeration could reduce landfill aftercare and energy costs..
54. Danhui Xin, Yongxia Hao, Takayuki Shimaoka, Hirofumi Nakayama, Chai Xiaoli, Site specific diel methane emission mechanisms in landfills: A field validated process based on vegetation and climate factors, Environmental Pollution, Vol.218, pp.673-680, 2016.08.
55. Boran Wu, Dongyang Wang, Xiaoli Chai, Fumitake Takahashi, Takayuki Shimaoka, Characterization of chlorine and heavy metals for the potential recycling of bottom ash from municipal solid waste incinerators as cement additives, Frontiers of Environmental Science and Engineering, 10.1007/s11783-016-0847-9, 10, 4, 2016.08, Bottom ash is an inevitable by-product from municipal solid waste (MSW) incineration plants. Recycling it as additives for cement production is a promising disposal method. However, the heavy metals and chlorine are the main limiting factors because of the potential environmental risks and corrosion of cement kilns. Therefore, investigating heavy metal and chlorine characteristics of bottom ash is the significant prerequisite of its reuse in cement industries. In this study, a correlative analysis was conducted to evaluate the effect of the MSW components and collection mode on the heavy metal and chlorine characteristics in bottom ash. The chemical speciation of insoluble chlorine was also investigated by synchrotron X-ray diffraction analysis. The results showed that industrial waste was the main source of heavy metals, especially Cr and Pb, in bottom ash. The higher contents of plastics and kitchen waste lead to the higher chlorine level (0.6 wt.%–0.7 wt.%) of the bottom ash. The insoluble chlorine in the MSW incineration bottom ash existed primarily as AlOCl, which was produced under the high temperature (1250°C) in incinerators.[Figure not available: see fulltext.].
56. Hasegawa Ryoji, Hirofumi Nakayama, Takayuki Shimaoka, Prediction of economic impact brought about by the increase of non-metallic mineral wastes in Japan, 24th IIOA Conference in Seoul, Korea, 2016.07.
57. Shuo Yang, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Takashi Kawano, Yoshitada Kakuta, The impact of thermal treatment and cooling methods on municipal solid waste incineration bottom ash with an emphasis on Cl, Environmental Technology, Vol.37, pp.2564-2571, 2016.06.
58. Kanawut Inkaew, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Modeling the formation of the quench product in municipal solid waste incineration (MSWI) bottom ash, The journal of Waste Management, Vol.52, pp.159-168, 2016.06.
59. Amirhomayoun Saffarzadeh, Nithiya Arumugam, Takayuki Shimaoka, Municipal solid waste incineration bottom ash by adding metalaluminum as a promoter, International Conference on Hidrogen Production 2016 (ICH2P-2016), 2016.05.
60. Mitali NAG, Takayuki Shimaoka, Teppei Komiya, Field Study of Nitrous Oxide Production with In-situ Aeration in an Old landfill Site, Journal of the Air & Waste Management Association, Vol.66, pp.280-287, 2016.03.
61. Takayuki Shimaoka, Koji Kumagai, Takeshi Katsumii, Michio Iba, Design, installation, and maintenance of temporary storage sites for radioactive decontamination waste, The 15th Asian Regional Conference of Solid Mechanics and Geotechnical Engineering(ISSMG-15ARC), pp.2385-2390, 2016.01.
62. Hiroki Kitamura, Takaya Sawada, Takayuki Shimaoka, Fumitake Takahashi, Geochemically structural characteristics of municipal solid waste incineration fly ash particles and mineralogical surface conversions by chelate treatmen, Environmental Science and Pollution Research, Vol.23, pp.734-743, 2016.01.
63. Amirhomayoun Saffarzadeh, Nithiya Arumugam, Takayuki Shimaoka, Aluminum and aluminum alloys in municipal solid waste incineration (MSWI) bottom ash: A potential source for the production of hydrogen gas, International Journal of Hydrogen Energy, Vol.41, Issue2, 2016.01.
64. Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Feasibility of using natural fishbone apatite on removal of Pb from municipal solid waste incineration (MSWI) fly ash, The 10th International Conference on Waste Management and Technology, pp.391-396, 2015.10.
65. Yue MU, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, INFLUENCE OF IGNITION PROCESS ON MASS LOSS AND MINERAL PHASE CHANGE IN MSWI FLY ASH, The 6th China-Japan Joint Conference on Material Recycling and Solid Waste Management, pp.172-177, 2015.08.
66. Asiyanthi Tabran LANDO, Hirofumi Nakayama, Takayuki Shimaoka, Development of Laser Scanning Method for Estimation of Spatiala Distribution of Methane Emission in a Landfill
(廃棄物埋立地におけるメタン放出量の面的分布推定のためのレーザースキャン法の開発), 工学紀要第75巻第1号, pp.29-46, 2015.07.
67. Pavel Ehler, Teppei Komiya, Takayuki Shimaoka, Temperature distribution and self-heating of biomass during storage in flexible intermediate bulk containers, The 2nd 3R International Scientific Conference, 2015.05.
68. Hiroki Kitamura, Takayuki Shimaoka, Fumitake Takahashi, Micro-scale distribution of heavy metals in chelate-treated municipal solid waste incineration fly ash particles, The 2nd 3R International Scientific Conference, 2015.05.
69. Chuanfu Wu, Takayuki Shimaoka, Hirofumi Nakayama, Teppei Komiya, Kinetics of nitrous oxide production by denitrification in municipal solid waste, Journal of Chemosphere, Vol.125, 54-69, 2015.04.
70. Kanawut Inkaew, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Impacts of Water Quenching on MSWI Bottom Ash Characterization, IWWG-ARB2015, pp.87-100, 2015.04.
71. Mitali NAG, Takayuki Shimaoka, Teppei Komiya, Nitrous oxide Production during Nitrification from Organic Solid Waste under Different Oxygen conditions, Proceedings of the WasteSafe 2015 – 4th International Conference on Solid Waste Management in the Developing Countries, 166-176, 2015.02.
72. Kanawut INKAEW, Amirhomayoun SAFFARZADEH, Takayuki Shimaoka, Characterization of Grate Sifting Deposition Ash, Unquenched Bottom Ash and Water-Quenched Bottom Ash from Mass-Burn Moving Grate Waste to Energy Plant, 環境工学研究論文集, Vol.70, No.7,  Ⅲ469-475, 2014.12.
73. Pavel EHLER, Takayuki Shimaoka, Teppei Komiya, Behavior of gas and heat transport in a simulated temporary disaster waste pile, 環境工学研究論文集, Vol.70, No.7, Ⅲ477-481, 2014.12.
74. Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Yoshitada Kakuta, Takashi Kawano, Cesium distribution and phases in proxy experiments on the incineration of radioactively contaminated waste from the Fukushima area, Journal of Environmental Radioactivity, Vol.136, 76-84, 2014.10.
75. Yasumasa Tojo, Toshihiko Matsuto, Takayuki Matsuo, Takayuki Shimaoka, pH and Temperature on Cesium Leaching From Bottom Ash, The 8th Intercontinental Landfill Symposium (ICLRS2014), 2014.10.
76. Yutaka Dote, Tomoo Sekito, Takayuki Shimaoka, Effect of pH and temperature on cesium leaching from bottom ash, The 8th Intercontinental Landfill Symposium (ICLRS2014), 182-185, 2014.10.
77. Teppei Komiya, Akito Hanaki, Takayuki Shimaoka, A FUNDAMENTAL STUDY ON THE MODELING OF SOLUTE TRANSFER BETWEEN MOBILE AND IMMOBILE REGIONS OF PORE WATER IN A SOLID WASTE LAYER, APLAS2014, 277-286, 2014.10.
78. Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Occurrence and forms of cesium compounds in bottom ash products derived from the thermal treatment of solid waste- Implications for radioactively contaminated waste from the Fukushima area, the 9th International Conference on Waste Management and Technology (ICWMT), Beijing, China, 29-31, 2014.10.
79. Yunmei Wei, Takayuki Shimaoka, Amirhomayoun Saffarzadeh, Chun Zhao, Xuya Peng, Geoenvironmental Weathering/Deterioration of
Landfilled MSWI-BA Glass, Journal of Hazardous Materials, Vol. 278, 610-619, 2014.08.
80. Takayuki Shimaoka, Amirhomayoun Saffarzadeh, CHEMICAL FORMS OF CESIUM IN THE SYNTHESIZED ASH RESIDUES, Proceedings of the 5th China-Japan Joint Conference for the Community Formation on Material Recycling and Waste Management, 93-98, 2014.07.
81. Masataka Kishida, Yuka Watanabe, Teppei Komiya, Takayuki Shimaoka, STUDY ON LEACHING BEHAVIOR OF CESIUM IN INCINERATION ASH, Proceedings of the 5th China-Japan Joint Conference for the Community Formation on Material Recycling and Waste Management, 57-58, 2014.07.
82. Teppei Komiya, Akito Hanaki, Takayuki Shimaoka, FUNDAMENTAL STUDY ON MODELING OF SOLUTE TRANSFER BETWEEN MOBILE AND IMMOBILE REGIONS OF PORE WATER IN SOLID WASTE LAYER, Proceedings of the 5th China-Japan Joint Conference for the Community Formation on Material Recycling and Waste Management, 51-56, 2014.07.
83. Arumugam Nithiya, Takayuki Shimaoka, Amirhomayoun Saffarzadeh, Hydrogen generation potential in MSW incinerator bottom ash, Conference on Korea Society of Waste Management, 15-17, 2014.05.
84. ATSUSHI YAMAWAKI, Takayuki Shimaoka, KIYOSHI OMINE, Yoici Doi, Mikio Kawasaki, Kawai Seiji, A Study of Slope Failures of Deposited Solid Waste Layers at Illegal Dumping Sites in Japan, Eurasia Waste Management Symposium 2014, 459-466, 2014.04.
85. Takayuki Shimaoka, Amirhomayoun Saffarzadeh, Chemical forms of cesium in the synthesized ash residues, Eurasia Waste Management Symposium 2014, 118-125, 2014.04.
86. Kawai Seiji, Takayuki Shimaoka, Atsushi Yamawaki, Geotechnical Stabilization of IlIegaly Dumped Solid Waste Mixed with Soft Plastics, Eurasia Waste Management Symposium 2014, 467-474, 2014.04.
87. Shuo Yang, Amirhomayoun Saffarzadeh, Takayuki Shimaoka, The existence of Cl in municipal solid waste incineration bottom ash and the dechlorination effect, Journal of Hazardous Materials, Volume 267, pp.214-220, 2014.02.
88. Xiong SHI, Takayuki Shimaoka, Teppei Komiya, Jinhui LI, Proper Design of Leachate Collection Pipe in Semi-aerobic Landfill by Two Dimensional Simulation, Advanced Materials Research Vol. 878 (2014), pp.308-314
, 2014.01.
89. Chuanfu Wu, Takayuki Shimaoka, Hirofumi Nakayama, Teppei Komiya, Xiaoli Chai, Yongxia Hao, Influence of aeration modes on leachate characteristic of landfills that adopt the aerobic–anaerobic landfill method, Waste Management, Volume 34, Issue 1, pp.101-111, 2014.01.
90. Mitali NAG, Takayuki Shimaoka, Teppei Komiya, Influence of Intermittent Aeration on GHGs Abatement and Leachate Quality in Aerobic-Anaerobic Landfill Method, Proceedings of International Symposium on Earth Science and Technology 2013, pp.228-233, 2013.12.
91. Hiroki Kitamura, Takaya Sawada, Fumitake Takahashi, Takayuki Shimaoka, Morphological Surface Conversions of Municipal Solid Waste Incineration Fly Ash after Moistening, Proceedings of the 4th China-Japan Joint Conference for the Community Formation on Material Recycling and Solid Waste Management, pp.80-82, 2013.11.
92. Takayuki Shimaoka, Amirhomayoun Saffarzadeh, Formation of Secondary Fe-Rich Products in Landfilled MSWI Bottom Ash as a Result of Natural Weathering, Proceedings of the 4th China-Japan Joint Conference for the Community Formation on Material Recycling and Solid Waste Management, pp.72-75
, 2013.11.
93. Hirofumi Nakayama, Asiyanthi T. Lando, Takayuki Shimaoka, Estimation of Methane Emissions in a Landfill by Using Surface Scanning Method, Proceedings of the 4th China-Japan Joint Conference for the Community Formation on Material Recycling and Solid Waste Management, pp.44-47, 2013.11.
94. Tetsuya Miyahara, Hirofumi Nakayama, Takayuki Shimaoka, Hroaki Takayama, Shuichi Yamashita, Yuichi Ueda, Tomoakai Hachimura, Shuichi Nagaoka, Low-Altitude Remote sensing for Monitoring of Surface Temperature and Moisture Content in a Landfill Site, Proceedings of the 7th International Symposium on the East Asian Environmental Problems, pp.168-174, 2013.11.
95. Asiyanthi Tabran Lando, Hirofumi Nakayama, Takayuki Shimaoka, Estimation of Spatial Variation of Methane Emission in a Landfill, Proceedings of the 7th International Symposium on the East Asian Environmental Problems, pp.116-120, 2013.11.
96. Hirofumi Nakayama, Takayuki Shimaoka, Kiyoshi Omine, Maryono, Plubcharoensuk Patsaraporn, Orawan Siriratpiriya, Solid Waste Management in Bangkok at 2011 Thailand Floods, Journal of Disaster Research, Vol.8, No.3, pp.1-9, 2013.05.
97. Haixia Zhang, Takayuki Shimaoka, Formation of Humic Substances in weathered MSWI Bottom Ash, The Scientific World Journal, pp.1-5
, 2013.04.
98. Kandula P.K. Jayakody, Takayuki Shimaoka, Teppei Komiya, Modelling of Biodegradation Induced MSW Landfill Settlement, Proceedings of Conference on Sri Lanka - Japan Collaborative Research 2013, p.44
, 2013.03.
99. Takayuki Shimaoka, Chuanfu Wu, Kandula P.K.Jayakody, Hirofumi Nakayama, Influence of Aeration Modes on the Biodegradation of Solid Waste in a Landfill Adopting the Aerobic-Anaerobic Method, Proceedings of Conference on Sri Lanka - Japan Collaborative Research 2013, p.51, 2013.03.
100. Asiyanthi Tabran Lando, Hirofumi Nakayama, Takayuki Shimaoka, Monitoring of Methane Concentration in Indonesia Landfill Sites, Proceedings of the 1st IWWG-ARB Symposium, 2013.03.
101. Chuanfu Wu, Takayuki Shimaoka, Hirofumi Nakayama, Teppei Komiya, Xiaoli Chai, Yongxia Hao, Influence of Aeration Modes on the Characteristic of Leachate from Landfill Adopting Aerobic-Anaerobic Landfill Method, Proceedings of the 1st IWWG-ARB Symposium, 2013.03.
102. Maryono Maryono, Takayuki Shimaoka, Hirofumi Nakayama, Evaluation of Disaster Resilience on Waste Management in Developing Countries, Proceedings of the 12th Expert Meeting on Solid Waste Management in Asia and Pacific Island (SWAPI), 2013.03.
103. Irwan Ridwan Rahim, Takayuki Shimaoka, Hirofumi Nakayama, Development of life cycle replacement cost methods to estimate the environmental cost of Municipal Solid Waste management in developing countries, Proceedings of the 12th Expert Meeting on Solid Waste Management in Asia and Pacific Island (SWAPI), 2013.03.
104. Fumitake Takahashi, Takayuki Shimaoka, The Weathering Of Municipal Solid Waste Incineration Bottom Ash Evaluated By Some Weathering Indices For Natural Rock, Waste management, Volume 32, pp.2294-2305, 2012.12.
105. Hirofumi Nakayama, Hirofumi Nakayama, Teppei Komiya, Xiaoli Chai, MODELING OF LANDFILL GAS EMISSION THROUGH VEGETATION, Proceedings of the 6th International Symposium on the East Asian, pp.38-48, 2012.11.
106. Kandula.P.K.Jayakody, Takayuki Shimaoka, Teppei Komiya, Municipal solid waste landfill settlement model considering microbial kinetics in biodegradation, 土木学会論文集G, Vol.68, No.7, pp.Ⅲ-121-129, 2012.11.
107. Irwan Ridwan RAHIM, Hirofumi Nakayama, Takayuki Shimaoka, Cost Analysis of Municipal Solid Waste Management in Major Indonesian Cities, Journal of Japan Society of Civil Engineering, Ser.G(Environmental Research, Vol. 68,No.6II-79-89, 2012.10.
108. Irwan Ridwan RAHIM, Hirofumi Nakayama, Takayuki Shimaoka, Economic Incentives in an Effort to Reduce Greenhouse Gas Emissions from Municipal Solid Waste Sector: Case Study in Major Indonesian Cities, Proceedings of The 7th Asian Pacific Landfill Symposium 2012, OMS 5-51-57, 2012.10.
109. Takayuki Shimaoka, Atmospheric mercury emissions from waste combustions measured by continuous monitoring devices, Journal of the Air & Waste Management Association, Vol.62(5), pp.1-10, 2012.04.
110. Hirofumi Nakayama, Daisuke Tsuchida, Takayuki Shimaoka, Estimation of cost reduction and increase for the final disposal associated with the categorization of inert waste landfills in Japan, Waste Management & Research, Vol.30(2), pp.190-199, 2012.02.
111. Takayuki Shimaoka, 熱画像検査による遮水シート接合部合否判定のための伝熱シミュレーション, Geosynthetics Engineering Journal, Vol26, pp.145-150, 2011.12.
112. Takayuki Shimaoka, Water Retention Dynamics in Simulated Landfill Under Settlement, 土木学会論文集G(環境), Vol.67, No.7, pp.Ⅲ_783-Ⅲ_787, 2011.11.
113. Takayuki Shimaoka, Title Cost Analysis of Municipal Solid Waste in Several Indonesian's Major Cities, The 10th International Symposium on the East Asian Environmental Problems, pp.47-53, 2011.11.
114. Chuanfu Wu, Takayuki Shimaoka, Teppei Komiya, Gangzhen Jiao, The Impact of Temperature and Gas-phase Oxygen on Kinetics of Carbon Degradation in Municipal Solid Waste, The 5th International Symposium on the East Asian Environmental Problems, pp.41-46, 2011.11.
115. Yang Shuo, Takayuki Shimaoka, Teppei Komiya, Modeling of the Dechlorination Effect of MSWI Ash with Addition of Solid Waste in Landfill System, The 5th International Symposium on the East Asian Environmental Problems, pp.35-40, 2011.11.
116. Mayu Takahashi, Hirofumi Nakayama, Takayuki Shimaoka, Xiaoli Chai, Relation Between the Effect of Vegetation on CH4 Emission and Cover Soil Property, The 5th International Symposium on the East Asian Environmental Problems, pp.25-28, 2011.11.
117. Kandula P.K. Jayakody, Takayuki Shimaoka, Teppei Komiya, Pavel Ehler, Variation of Gas and Water Transport Characteristics in Solid Waste Landfill Under Settlement, The 5th International Symposium on the East Asian Environmental Problems, pp.19-24, 2011.11.
118. Yunmei Wei , Takayuki Shimaoka , Amirhomayoun Saffarzadeh , Fumitake Takahashi, Alteration of municipal solid waste incineration bottom ash focusing on the evolution of iron-rich constituents, Waste Management, Volume 31, pp.1992-2000, 2011.11.
119. Fumitake Takahashi, Takayuki Shimaoka, Kevin H Gardner, Akiko Kida, Size-dependent enrichment of waste slag aggregate fragments abraded from asphalt concrete, Journal of Hazardous Materials, Vol.194, pp.209-215, 2011.11.
120. F. TAKAHASHI, K. YOKOHATA, T. SHIMAOKA, Copper Complexation of Humic Substances Generated In A Landfill Site That Municipal Solid Waste Incineration Residues Was Disposed Mainly, The 4th IWA-ASPIRE Conference & Exhibition, pp.18-26, 2011.10.
121. Takayuki Shimaoka, Hirofumi Nakayama, Teppei Komiya, Gangzhen Jiao, Youcai Zhao, Xiaoli Chai and Guixiang Liu, INFLUENCE OF AIR INJECTION ON THE STABILIZATION OF LANDFILL ADOPTING THE AEROBIC-ANAEROBIC METHOD, Journal of Sustainable Environment Research, pp.229-237, 2011.10.
122. N. HIRAYAMA, T. SHIMAOKA, T. FUJIWARA, T. OKAYAMA, K. KAWATA, ESTABLISHMENT OF PROCEDURE FOR QUANTITATIVE ASSESSING OF DISASTER DEBRIS IMPACT ON LANDFILL SYSTEM, The 13th International Waste Management and Landfill Symposium, pp.1177-1178, 2011.10.
123. T. SHIMAOKA, T. KOMIYA, G. JIAO, Y. HAO, X. CHAI, Y. ZHAO, OPTIMUM AIR INJECTION MANNER FOR THE STABILIZATION OF LANDFILL ADOPTING THE AEROBIC-ANAEROBIC METHOD, The 13th International Waste Management and Landfill Symposium, pp.207-208, 2011.10.
124. Hirofumi Nakayama, Takayuki Shimaoka, Ryoji Hasegawa and Masahiro Osako, Material Flow Analysis on Non-metallic Mineral Resources in Japan, The 3rd China-Japan Joint Conference for the community formation on material recycling and waste management, pp.83-88, 2011.08.
125. T. Shimoaka, T. Komiya, G.Jiao, Y. Hao and Y. Zhao, Optimum Air Injection Manner for the Stabilization of Landfill Adopting the Aerobic-anaerobic Method, The 3rd China-Japan Joint Conference for the community formation on material recycling and waste management, pp.7-12
, 2011.08.
126. Fumitake TAKAHASHI, Takayuki SHIMAOKA, Can chemical form composition explain heavy metal leachability in MSW incineration fly ash? - A comparison study, The 3rd China-Japan Joint Conference for the community formation on material recycling and waste management, pp.49-53, 2011.08.
127. Takayuki Shimaoka, Teppei Komiya, Fumitake Takahashi, and Hirofumi Nakayama, Dechlorination of Municipal Solid Waste Incineration Residues for Beneficial Reuse as a Resource for Cement, Journal of ASTM International, Vol. 8, No. 10, pp.JAI103671 (14 pages) , 2011.08.
128. Amirhomayoun Saffarzadeh a, Takayuki Shimaoka a, Yunmei Wei a, Kevin H. Gardner ,Craig N. Musselman, Impacts of natural weathering on the transformation/neoformation processes in landfilled MSWI bottom ash: A geoenvironmental perspective, Waste Management, Vol.31, pp.2440-2454 , 2011.08.
129. Fumitake TAKAHASHI, Tasuku TAKATORI, Takayuki SHIMAOKA, Necessary mercury diffusion coefficient of a protective layer for long-term underground repository of unused mercury, The 10th International Conference on Mercury as Global Pollutant "Mercury2011", pp.302
, 2011.07.
130. Fumitake Takahashi, Akiko Kida, Takayuki Shimaoka, Uncertainty Analysis of Gaseous Mercury Concentration Measurement Using Batch-type Monitoring Method For Waste Conbustions, Korea-Japan Special Symposium: 15th Korea-Japan Joint International Session, Korea Society of Waste Management, pp.90-92, 2011.05.
131. Kazuya Yokohata, Fumitake Takahashi, Takayuki Shimaoka, Copper Complexation of Humic Substances Produced in a Landfilled Municipal Solid Waste Incineration Residues, Korea-Japan Special Symposium, pp.107-109, 2011.05.
132. Ahou Florent Bott, Takayuki Shimaoka, Hirofumi Nakayama, The status of solid waste management and challenges in Cote d'ivoire, Waste Management, Volume 31(2011) ,pp.1661-1665, 2011.04.
133. Pham Thi Thanh Thuy, Nguyen Thi Hoa Ha, and Takayuki Shimaoka , Environmental impact assessment of growing Jatropha on uncultivated land and poor forest to produce biodiesel in Binh Thuan Province, Vietnam, The 8th Expert Meeting on Solid Waste Management in Asia and Pacific Island(SWAPI), pp.441-453, 2011.02.
134. Kandula P.K.Jayakody, Takayuki Shimaoka, Teppei Komiya, Applicability of Existing Landfill Settlement Models to Different Waste Compositions, The 8th Expert Meeting on Solid Waste Management in Asia and Pacific Island(SWAPI), pp.218-227, 2011.02.
135. Agamuthu,P.,Nithiya,A.and Shimaka,T, Brewery Waste: Approach in Enzyme Production, The 8th Expert Meeting on Solid Waste Management in Asia and Pacific Island(SWAPI), pp.85-99, 2011.02.
136. Takayuki Shimaoka, Teppei Komiya, Fumitake Takahashi,Hirofumi Nakayama, Dechlorination of Municipal Solid Waste incineration Residues for Benefical Reuse as a Resource for Cement, International Symposium on Testing and Specification of Recycle Materials for Sustainable Geotechnical Construction, pp.36, 2011.02.
137. Yunmei WEI, Takayuki SHIMAOKA, Amirhomayoun Saffarzadeh, Fumitake Takahashi, Mineralogical characterization of municipal solid waste incineration bottom ash with an emphasis on heavy metal-bearing phasses, Journal of Hazardous Materials, Vol.187,pp534-543, 2011.01.
138. Hirofumi NAKAYAMA, Takayuki SHIMAOKA, Mayu TAKAHASHI, Xiaoli CHAI, Youcai ZHAO, Effects of Vegetation on CH4 Emissions From Landfills As a Pathway of CH4 Migration, The 2nd China-Japan Joint Conference for the community formation on material recycling and waste management, pp.73-76, 2010.09.
139. Takayuki SHIMAOKA, Asuka Morita, Fumitake TAKAHASHI, Teppei KOMIYA, Numerical Simulation of Chlorine Removal Through the Conversion of Friedel's Salt in the Mixture of Municipal Solid Waste Incieration Bottom Ash and Organic Compounds, The 2nd China-Japan Joint Conference for the community formation on material recycling and waste management, pp.52-55, 2010.09.
140. Takayuki SHIMAOKA, Asuka Morita, Fumitake TAKAHASHI, Teppei KOMIYA, Numerical Simulation of Chlorine Removal Through the Conversion of Friedel's Salt in the Mixture of Municipal Solid Waste Incieration Bottom Ash and Organic Compounds, The 4th International Conference of East Asia Environment Problems "EAEP2010", pp.249-254, 2010.09.
141. Yunmei WEI, Takayuki SHIMAOKA, Amirhomayoun SAFFARAZADEH, Fumitake TAKAHASHI, Weathering of MSWI Bottom Ash With Emphasis on the Evolution of Iron-rich Constituents, The 4th International Conference of East Asia Environment Problems "EAEP2010", pp.241-248, 2010.09.
142. Xiong SHI, Takayuki SHIMAOKA, Teppei KOMIYA, Gangzhen JIAO, Rational Design of Leachate Collection Pipe in Semi-Aerobic Landfill by Numerical Simulation, The 4th International Conference of East Asia Environment Problems(EAEP2010), pp.235-240, 2010.09.
143. Gangzhen JIAO, Takayuki SHIMAIOKA, Teppei KOMIYA, Xiong SHI, Examination on Influence Caused by Air Injection Manners Changing in Aerobic-Anaerobic Landfill Method, The 4th International Conference of East Asia Environment Problems (EAEP2010), pp.109-114, 2010.09.
144. Hirofumi NAKAYAMA, Takayuki SHIMAOKA, Mayu TAKAHASHI, Xiaoli CHAI, Youcai ZHAO, Effects of Vegetation on CH4 Emissions From Landfills As a Pathway of CH4 Migration, The 4th International Conference of East Asia Environment Problems (EAEP2010), pp.109-114, 2010.09.
145. Gangzhen Jiao, Takayuki Shimaoka, Teppei Komiya, Xiong Shi, Examination on Influence Caused by Air Injection Manners Changing in Aerobic-Anaerobic Landfill Method, The 4th International Conference of East Asia Environment Problems (EAEP2010), pp.109-114, 2010.09.
146. Hirofumi Nakayama, Takayuki Shimaoka, Mayu Takahashi, Xiaoli Chai, Youcai Zhao, Effect of Vegetation on CH4 Emission From Landfills AS A Pathway For CH4 Migration, The 4th International Conference of East Asia Environment Problems (EAEP2010), pp.89-93, 2010.09.
147. Fumitake Takahashi, Akiko Kida, Takayuki Shimaoka, Statistical estimate of mercury removal efficiencies for air pollution control devices of municipal solid waste incinerators, Science of the Total Environment, pp.5472-5477, 2010.09.
148. Nagahisa Hirayama, Takayuki Shimaoka, Takeshi Fujiwara, Tomoko Okayama, and Yoshiaki Kawata, Establishment of Disaster Debris Management Based on Quantitative Estimation Using Natural Hazard Maps, Waste Management and the Environment Ⅴ, WIT Transactions on Ecology and Environment, Vol.40,pp.167-178, 2010.07.
149. Gangzhen Jiao, Takayuki Shimaoka, Teppei Komiya, Simulation of Air Supply Influence on the Stabilization of Aerobic-anaerobic Landfill, The 6th International Landfill Research Symposium,Kiroro,Hokkaido,Japan, pp.149-150, 2010.06.
150. Xiong Shi, Takayuki Shimaoka, Teppei Komiya, Influence of Laying Condition of Leachate Collection Pipe on Stabilization in Semi-Aerobic Landfill, The 6th International Landfill Research Symposium,Kiroro,Hokkaido,Japan, pp.147-148, 2010.06.
151. Hirofumi Nakayama, Takayuki Shimaoka, Daisuke Tsuchida, Estimation of Reduced Expenses for the Final Disposal snd Potential Restoration Costs Associated with the Categorization of Inert Waste Landfills, The 6th International Landfill Research Symposium,Kiroro,Hokkaido,Japan, pp.139-141, 2010.06.
152. Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Processes Affecting the Mineralogical Evolution/Behavior of MSWI Bottom Ash When Submitted to Natural Weathering, The 6th International Landfill Research Symposium,Kiroro,Hokkaido,Japan, pp.113-114, 2010.06.
153. Fumitake TAKAHASHI, Kazuya YOKOHATA, Takayuki SHIMAOKA, Copper complexation by fulvic acid generated in landfilled municipal solid wasete incineration residues, Korea-Japan Special Symposium: 14th Korea-Japan Joint International Session, Korea Society of Waste Management, pp.177-179, 2010.05.
154. H. Nakayama, T. Shimaoka, S. Ueda, K. Aoyama , Thermo-graph inspection for geomembrane seam evaluation, The 9th International Conference on Geosynthetics, Brazil, pp.1009-1012, 2010.05.
155. J. Hironaka, T. Hirai, T. Shimaoka, H. Nakayama, T. Katsumi, S. Ueda, H. Kanou, Method of evaluating the durability of geomembrane in landfill, The 9th International Conference on Geosynthetics, Brazil, pp.851-854, 2010.05.
156. T. Shimaoka, H. Nakayama, T. Hirai, J. Hironaka, T. Katsumi, S. Ueda, H. Kanou , Evaluation of physical properties of aged geomembranes taken from landfill sites in Japan, The 9th International Conference on Geosynthetics, Brazil, pp.809-812, 2010.05.
157. Nagahisa Hirayama, Takayuki Shimaoka, Takeshi Fujiwara, Tomoko Okayama, and Yoshiaki Kawata, Implementation of intelligence of flood disaster debris discharge for emergency response, Risk Analysis Ⅶ, WIT Transactions on Informaation and Communication Technologies, Vol.43,pp.217-228, 2010.05.
158. I.R.Rahim, T.Shimaoka and H.Nakayama, Waste Material Assessments at Residental Construction Project (Case Study of House Construction in Tanjung Bunga Resort, Makassar), The First Makassar International Conference on Civil Engineering(MICCE2010), pp.1355-1362, 2010.03.
159. Takayuki Shimaoka , Gangzhen Jiao and Teppei Komiya, Development of Aerobic-Anaerobic Method for Acceleration of Landfill Stabilization, AUN/SEED-Net 2nd Regional Conference on Global Environment, pp.401, 2010.03.
160. Chai Xiaoli, Lou Ziyang, Takayuki Shimaoka, Hirofumi Nakayama, Zhu Ying, Cao Xiaoyan, Teppei Komiya, Toshio Ishizaki and Zhao Youcai, Characteristics of environmental factors and their effects on CH4 and CO2 emissions from a closed landfill:An ecological case study of Shanghai, Waste Management, Volume 30, Issue 3, pp. 446-451, 2010.03.
161. Tasuku TAKATORI, Fumitake TAKAHASHI and Takayuki SHIMAOKA, Evaluation of Acceptable Diffusion Coefficients for Long-term Reservoirs of Recovered Mercury,Based on a Mercury Pollution Model and an Environmental Risk Assement, International symposium on earth science and technology 2009, pp.193-198, 2009.12.
162. Chai Xiaoli, Lou Ziyang, Takayuki Shimaoka, Hirofumi Nakayama, Zhu Ying, Cao Xiaoyan, Teppei Komiya, Toshio Ishizaki and Zhao Youcai, Characteristics of environmental factors and their effects on CH4 and CO2 emissions from a closed landfil:An ecokogical case study of Shanghai, The 3rd international conference of East Asia Environmental Problems "EAEP2009", pp.48-49, 2009.12.
163. Ahou F.Bott, Takayuki Shimaoka and Hirofumi Nakayama, Solid Waste Handling Status and Challenges in Cote D'ivoire, The 3rd international conference of East Asia Environmental Problems "EAEP2009", pp.76-81, 2009.12.
164. Gangzhen Jiao, Takayuki Shimaoka, Teppei Komiya, Examination on Air Supply Condition for Aerobic-anaerobic Landfill Method, The 3rd international conference of East Asia Environmental Problems "EAEP2009", pp.88-93, 2009.12.
165. Xiong Shi, Takayuki Shimaoka, Teppei Komiya, Influence of Laying Condition of Leachate Collection Pipe on Stabilization in Solid Waste Landfill, The 3rd international conference of East Asia Environmental Problems "EAEP2009", pp.82-93, 2009.12.
166. Hirofumi Nakayama, Takayuki Shimaoka, Teppei Komiya, Mayu Takahashi, Xiaoli Chai, Youcai Zhao, Effect of Vegetation on CH4 Emission From A Landfill Site, The 3rd international conference of East Asia Environmental Problems "EAEP2009", pp.56-61, 2009.12.
167. Yunmei WEI, Takayuki SHIMAOKA, Fumitake TAKAHASHI, CO2 sequestration capacity based on mineralogical composition of MSWI bottom ash and reacitivity of each Ca-containing minerals, 環境工学研究論文集, Vol.46,pp.407-414, 2009.11.
168. 高橋史武, 高取 祐, 島岡隆行, 回収水銀の保管容器保護材に求められる拡散係数の水銀摂取モデルによる評価, 環境工学研究論文集, Vol.46, pp.345-354, 2009.11.
169. Takayuki Shimaoka, Hirofumi Nakayama, Fumitake Takahashi, Aska Morita, Beneficial Reuse of Municipal Solid Waste Incineration Residues as a Resource of Cement, The 4th International Conference on Waste Management and Technology, pp.192-200, 2009.11.
170. Fumitake TAKAHASHI, Akiko KIDA, Takayuki SHIMAOKA, Emission reduction efficiencies for air pollution control devices estimated based on a statistical approach, The 9th International Conference on Mercury as Global Pollutant "Mercury2009", Guiyang, pp.5, 2009.06.
171. Ruina ZHANG and Takayuki SHIMAOKA, Alterations of Fe/Al Minerals in Weathered Municipal Solid Waste Incineration Residues and Influences on Leachability of Heavy Metals, WASCON2009, (CD-ROM), 2009.06.
172. Fumitake TAKAHASHI, Akiko KIDA, Takayuki SHIMAOKA, Anthropogenic mercury emission to the atmosphere in Japan, Korea-Japan Special Symposium: 13th Korea-Japan Joint International Session, Korea Society of Waste Management, pp.79-81, 2009.05.
173. Amirhomayoun SAFFARZADEH, Takayuki SHIMAOKA, Yoshinobu MOTOMURA and Koichiro WATANABE, Characterization Study of Heavy Metal-Bearing Phases in MSW Slag, Journal of Hazardous Materials, Vol164,issues2-3, pp.829-834, 2009.05.
174. Lanhe Zhang, Qunhui Wang, Niantao Xue, Shulei Tian, Weiming Xie, Takayuki Shimaoka, Treatment of odour containnig hydrogen sulphide released from phamaceutical wastewater treatment plan with SRB process by bio-trickling filter, Environment and Pollution, Vol.38, Issue1-2, pp.140-150 , 2009.04.
175. Jiro Etoh, Takeshi Kawagoe, Takayuki Shimaoka, Koichiro Watanabe, Hydrothermal treatment of MSWI bottom ash forming acid-resistant material, Waste Management, Vol.29, No.3, pp.1048-1057, 2009.03.
176. Amirhomayoun Saffarzadeh, Takayuki Shimaoka, Yoshinobu Motomura, Koichiro Watanabe, Petrogenetic characteristics of molten slag from the pyrolysis/melting treatment of MSW, Waste Management, Vol.29, No.3, pp.1103-1113, 2009.03.
177. Simpei FUKUI, Teppei KOMIYA, Fumitake TAKAHASHI, Takayuki SHIMAOKA, Pore Structure Generated From the Leaching of Soluble Components in
Landfilled Municipal Solid Waste Incineration Bottom Ash, International Symposium on Earth Science and Technology 2008, Fukuoka, pp.215-220, 2008.12.
178. Fumitake TAKAHASHI, Jiro ETOH, Takayuki SHIMAOKA, Composition share of waste-melted slag fragments in abrasion dust from
asphalt concrete that contains waste-melted slag as aggregates, International Symposium on Earth Science and Technology 2008, Fukuoka, pp.743-749, 2008.12.
179. Eiichi Saito, Takayuki Shimaoka, Shingo Idemoto, Takuma Kano and Minoru Osa, A Study on the Behavior of Heavy Metal in the Coal Ash which Received
the Aging Action, The 5th Asian-Pacific Landfill Symposium, Sapporo, (CD-ROM), 2008.10.
180. Fumitake Takahashi and Takayuki Shimaoka, Metal Mobilization from Municipal Solid Wastes Incineration Residues
through Metal Complexation with Organic and Inorganic Ligands, The 5th Asian-Pacific Landfill Symposium, Sapporo, (CD-ROM), 2008.10.
181. Jiro Etoh, Tohru Kyuragi and Takayuki Shimaoka, Hydrothermal Treatment of Municipal Solid Waste Incinerator Bottom Ash
as a Pretreatment of Landfill Disposal, The 5th Asian-Pacific Landfill Symposium, Sapporo, (CD-ROM), 2008.10.
182. E. Saito, T. Shimaoka, J. Etoh, S. Idemoto, T. Kano, Changes in the leaching behavior of trace hazardous elements in coal ash
due to the carbonation of ettringite, 2nd international conference on Accelerated Carbonationfor Environmental and Materials Engineering, Rome, pp.357-386, 2008.10.
183. F. Takahashi, T. Shimaoka, K. Saito, J. Etoh, Effect of the sorption on lead immobilization of carbonated MSW
incineration bottom ash, 2nd international conference on Accelerated Carbonation for Environmental and Materials Engineering, Rome, pp.343-352, 2008.10.
184. Takayuki Shimaoka, Tomohiro Naruoka, Jiro Etoh, Fumitake Takahashi, and Ruina Zhang, Dechlorination of Landfilled Incineration Residues for Cement Material by Recyclable Landfill System, The Fifth Intercontinental Landfill Research Symposium, pp.43-44, 2008.09.
185. Hirofumi Nakayama, Takayuki Shimaoka and Masahiro Osako, ASSET MANAGEMENT FOR UTILIZATION OF RECYCLABLE RESOURCES IN ROAD CONSTRUCTION, Sino-Japan International Symposium on the East Asian Environmental Problems, pp.26-29, 2008.08.
186. Takayuki Shimaoka, Tomohiro Naruoka, Jiro Etoh, Fumitake Takahashi, Ruina Zhang, DECHLORINATION OF LANDFILLED INCINERATION RESIDUES FOR CEMENT MATERIAL BY RECYCLABLE LANDFILL SYSYTEM, Sino-Japan International Symposium on the East Asian Environmental Problems, pp.22-25, 2008.08.
187. Hirofumi Nakayama, Takayuki Shimaoka and Shigeo Ueda, Development of Thermo-graph Inspection for Geomembrane Seam Evaluation, 4th Asian Regional Conference on Geosynthetics in Shanghai, pp.110-113, 2008.06.
188. Patsaraporn Plubcharoensuk, Hirofumi Nakayama and Takayuki Shimoaka , Material Flow Analysis for Industrial Waste Management in Thailand, Memoirs of the Faculty of Engineering, Kyushu University, Vol.68, No.2, pp.107-127, 2008.06.
189. Mei Wang, Ruina Zhang, Takayuki Shimaoka, Influence of Water-Cooling on Mineralogical Property and Heavy Metals Leaching Behavior of MSWI Bottom Ash, Korea-Japan Special Symposium: 12th Korea-Japan Joint International Session, Korea Society of Waste Management, pp.126-128, 2008.05.
190. Chai Xiaoli, Takayuki Shimaoka, Guo Qiang , Zhao Youcai , Characterization of humic and fulvic acids extracted from landfill by elemental composition, 13C CP/MAS NMR and TMAH-Py-GC/MS, Waste Management, Vol.28, No.5, pp.896-903, 2008.01.
191. Jiro ETOH, Tohru KYURAGI , Takayuki SHIMAOKA, , Effect of Organic Matter on Leaching Behavior of Heavy Metals from Municipal Solid Waste Incineration Bottom Ash
, 九州大学工学紀要 第67巻第4号 , 第67巻第4号 165-180
, 2007.12.
192. Jiro ETOH, Tohru KYURAGI , Takayuki SHIMAOKA, , Development of acid resisting recycled
material from municipal solid waste incinerator bottom ash through hydrothermal treatment,
, The 5th Japan / Korea International Symposium on Resources Recycling and Materials Science, , 11-18
, 2007.12.
193. Patsaraporn PLUBCHAROENSUK , Hirofumi NAKAYAMA , Takayuki SHIMAOKA , The Analysis of Industrial Waste Flow in Thailand by Structural Decomposition Analysis
, 5th International Symposium on Earth Science and Technology , 317-324
, 2007.12.
194. Jiro ETOH, Takayuki SHIMAOKA , Stabilization of Heavy Metals in Municipal Solid Waste Incinerator Bottom Ash with Hydrothermal Treatment
, 5th International Symposium on Earth Science and Technology , 123-130
, 2007.12.
195. Chai Xiaoli, Takayuki Shimaoka, Cao Xianyan, Guo Qiang , Zhao Youcai , Spectroscopic studies of the progress of humification processes, Chemosphere, Vol.69, No.9, pp.1446-1453, 2007.11.
196. Chai XIAOLI, Takayuki SHIMAOKA, Cao XIANYAN, Guo QIANG, Zhao YOUCAI, Spectroscopic Studies of the Progress of Humification Processes in Humic Substances Extracted from Refuse in a Landfill, Chemosphere, Chemosphere, Vol.69, No.9, pp.1446-1453, 2007.11.
197. Chai XIAOLI, Takayuki SHIMAOKA, Cao XIANYAN, Guo QIANG, Zhao YOUCAI , Spectroscopic Studies of the Progress of Humification Processes in Humic Substances Extracted from Refuse in a Landfill



, Chemosphere, Vol.69, No.9 , Vol.69, No.9.pp.1446-1453

, 2007.11.
198. T. Shimaoka, R. Zhang, K.Watanabe , Alterations of municipal solid waste incineration residues in a landfill

, Waste Management Vol. 27, Issue 10, 2007 , Vol. 27, Issue 10, 2007,pp.1444-1451
, 2007.10.
199. T. SHIMAOKA, T. NARUOKA, J. ETOH , H. NAKAYAMA , INNOVATIVE DECHLORINATION FROM MUNICIPAL SOLID WASTE INCINERATION RESIDUES
, Sardinia 2007 11th International Waste Management and Landfill Symposium PROCEEDINGS , 719-720, 2007.10.
200. Chai Xiaoli, Takayuki Shimaoka, Cao Xianyan, Guo Qiang , Zhao Youcai , Characteristics and mobility of heavy metals in an MSW landfill: Implications in risk assessment and reclamation
, Journal of Hazardous Materials, 144 (1-2)
, 2007.06.
201. Jiro ETOH , Takayuki SHIMAOKA , Koichiro WATANABE, SYNTHESIS OF HYDROTHERMAL MINERALS FROM MUNICIPAL SOLID WASTE INCINERATORS RESIDUES, Proceedings of 4th International Workshop on Earth Science and Technology, 37-44, 2006.12.
202. Patsaraporn PLUBCHAROENSUK , Hirofumi NAKAYAMA , Takayuki SHIMAOKA, Estimate of Industrial Waste Flow in Thailand, Prceedings of The Seventh International Conference on EcoBalance, 147-154, 2006.12.
203. Daisuke Tsuchida , Hirofumi Nakayama , Takayuki Shimaoka, Estimation Of Benefit and Cost associated with the Use of Inert Waste Landfills, Prceedings of The Seventh International Conference on EcoBalance, 155-162, 2006.12.
204. Daisaburo Koga , Hiroshi Kokubo , Takayuki Shimaoka, Shuji Kigawa, TREATMENT OF LEACHATE FROM SEA AREA LANDFILL BY SOIL SELF-PURIFICATION, Proceedings of the fourth Asian-Pacific Landfill Symposium In Shanghai 2006 Volume Ⅰ, 57-62, 2006.11.
205. Chai Xiaoli , Takayuki Shimaoka , Zhao Youcai, CHARACTERIZATION OF HUMIC AND FUVIC ACIDS EXTRACTED FROM MSW LANDFILL, Proceedings of the fourth Asian-Pacific Landfill Symposium In Shanghai 2006 Volume Ⅰ, 124-136, 2006.11.
206. Anel A. ROBERTS , Takayuki Shimaoka, EFFECT OF COMPACTING EFFORT ON THE CONSOLIDATION OF COARSE TYPE BARRIERS, Proceedings of the fourth Asian-Pacific Landfill Symposium In Shanghai 2006 Volume Ⅰ, 198-204, 2006.11.
207. Zhang Haixia , Takayuki Shimaoka , Jung-Joon Lee, VARIATION OF ORGANIC FRACTIONS IN A LANDFILL MAINLY DISPOSED WITH MUNICIPAL SOLID WASTE INCINERATION RESIDUES, Proceedings of the fourth Asian-Pacific Landfill Symposium In Shanghai 2006 Volume Ⅰ, 325-333, 2006.11.
208. Jiro Etoh ,Takayuki Shimaoka , Takeshi Kawagoe, HYDROTHERMAL TREARMENT OF MUNICIPAL SOLID WASTE INCINERATION ASH TOWARDS RECYCLE, Proceedings of the fourth Asian-Pacific Landfill Symposium In Shanghai 2006 Volume Ⅱ, 479-486, 2006.11.
209. Anel A. ROBERTS , Takayuki Shimaoka, ONE-DIMENSIONAL CONSOLIDATION CHARACTERISTICS OF COARSE TYPE BARRIERS, Proceedings of 4th International Workshop on Earth Science and Technology, 559-562, 2006.11.
210. Patsaraporn PLUBCHAROENSUK , Hirofumi NAKAYAMA , Takayuki SHIMAOKA, Evaluation of the Industrial Waste Data Collecrion System in Thailand, Proceedings of 4th International Workshop on Earth Science and Technology, 795-798, 2006.11.
211. Takayuki SHIMAOKA, Shogo SAKITA, Masahide NISHIGAKI and Tomoyuki TANAKA, Carbonation Treatment of Lead in Municipal Solid Waste Incineratation Bottom Ash for Beneficial Use, First Internatioal Conference on Accelerated Carbonation for Environmental and Materials Engineering, 65-68, 2006.06.
212. Takayuki Shimaoka, Ruina Zhang, Shogo Sakita, Jungjoon Lee and Jiro Etoh, Accelerated Carbonation for Immobilization of Lead in Municipal Solid Waste Bottom Ash, First Internatioal Conference on Accelerated Carbonation for Environmental and Materials Engineering, 69-72, 2006.06.
213. Jiro Etoh , Tanakyuki Shimaoka , Ruina Zhang , Takashi Haraguchi ,, Progress of Carbonation in Landfilled Municipal Solid Waste Incineration Residues, First Internatioal Conference on Accelerated Carbonation for Environmental and Materials Engineering, 39-42, 2006.06.
214. Takayuki SHIMAOKA , Ruina ZHANG, STABILEZED MUNICIPAL SOLID WASTE INCINERATION RESIDUES IN A LANDFILL FOR BENEFICIAL USE AS CONSTRUCTION MATERIALS, WASCON 2006, 713-721, 2006.05.
215. Lana SARIA , Takayuki Shimaoka , Kentaro Miyawaki, Leaching of heavy metals in acid mine drainage, Waste management & Research Vol 24. No 2. April 2006, 134-140, 2006.04.
216. Jiro ETOH, Tomonori TAKEMOTO, Hisao YMASHIGE, Haixia ZHANG, Jung-Joon LEE and Takayuki SHIMAOKA, Behavior of Chlorine in Municipal Solid Waste Incinerator Residues Mixed with Organic Matters ?An Experimental Approach Towards Recycled Material for Cement, Proceedings of 3rd International Workshop on Earth Science and Technology, 113-118, 2005.12.
217. Takashi HARAGUCHI, Takayuki SHIMAOKA, Koichiro WATANABE, Jiro ETOH, Ruina ZHANG and Takeshi KAWAGOE, Insolubility of Lead in Incinerated Ash Arising from Carbonation, Proceedings of 3rd International Workshop on Earth Science and Technology, 133-138, 2005.12.
218. Haixia ZHANG, Takayuki SHIMAOKA, Jung-Jong LEE and Ruina ZHANG, Temporal Variation of Metals and Organic Matter in a Landfill Mainly Disposed with Municipal Solid Waste Incineration Residues, Proceedings of 3rd International Workshop on Earth Science and Technology, 153-160, 2005.12.
219. Lana SARIA and Takayuki SHIMAOKA, Oxygen Reduction by Decomposition Process of Mixed Humus-Topsoil Multi-layer Preventing Pyrite Oxidation in Overburden Dumped, Proceedings of 3rd International Workshop on Earth Science and Technology, 203-212, 2005.12.
220. Anel A. ROBERTS and Takayuki SHIMAOKA, A New Concept of Lining Material for Municipal Solid Waste Landfills, Proceedings of 3rd International Workshop on Earth Science and Technology, 321-332, 2005.12.
221. Takeshi KAWAGOE, Jiro ETOH, Takayuki SHIMAOKA and Koichiro WATANABE, Development of Recycling Technology for Municipal Solid Waste Incineration (MSWI) Ash with Hydrothermal Synthesis Method, Proceedings of 3rd International Workshop on Earth Science and Technology, 397-404, 2005.12.
222. Lana SARIA, Takayuki SHIMAOKA, Kentaro MIYAWAKI, Effect of a Mixed Humus-topsoil Layer for Preventing Acid Mine Drainage, Proceedings of Sardinia 2005 Tenth International Waste Management and Landfill Symposium, 297-298, 2005.10.
223. Jung-Jong LEE, Takayki SHIMAOKA, Shogo SAKITA, Fabio G. UMESAKI, Formation and Leaching Characteristics of Humic Substances in Landfills Mainly Disposed with Municipal Solid Waste Incineration Residues, Proceedings of Sardinia 2005 Tenth International Waste Management and Landfill Symposium, 841-842, 2005.10.
224. Ruina ZHANG, Takayuki SHIMAOKA, Takashi HARAGUCHI, Leaching Behaviour and Alterations of Heavy Metals in MSW Incinerator Residues under Geochemical Weathering in a Landfill, Proceedings of Sardinia 2005 Tenth International Waste Management and Landfill Symposium, 299-300, 2005.10.
225. Ruina ZHANG, Takayuki SHIMAOKA, Shogo SAKITA, Jiro ETOH, Geochemical Weathering Indices of MSW Incinerator Residues in a Landfill - Assessment with Correlation Analysis, Proceedings of Sardinia 2005 Tenth International Waste Management and Landfill Symposium, 1013-1014, 2005.10.
226. Haixia Zhang, Jung-Joon Lee, Takayuki Shimaoka, Transformation of organic matter from municipal solid waste incineration residues in a landfill, Proceeding of the 1stInternational Conference on Pollution Control and Resource Reuse for a Better Tomorrow and Sustainable Economy, 707-714, 2005.10.
227. Shogo SAKITA, Takayuki SHIMAOKA, Carbonation Treatment of Heavy Metals in Municipal Solid Waste Incinerator Bottom Ash for Beneficial Use, Proceeding of the 1stInternational Conference on Pollution Control and Resource Reuse for a Better Tomorrow and Sustainable Economy, 892-896, 2005.10.
228. Hirofumi NAKAYAMA,Takayuki SHIMAOKA,Teppei KOMIYA,Toshio ISHIZAKI, Satellite Remote Sensing For Large-Scale Landfill Monitoring, Proceeding of the 1stInternational Conference on Pollution Control and Resource Reuse for a Better Tomorrow and Sustainable Economy, 274-278, 2005.10.
229. ZHAO Ping , Takayuki SHIMAOKA, Research on a method for promoting the elution behavior of chlorine in a municipal solid waste incinerated residues landfill, Proceeding of the 1stInternational Conference on Pollution Control and Resource Reuse for a Better Tomorrow and Sustainable Economy, 228-232, 2005.10.
230. Ruina ZHANG,Takayuki SHIMAOKA, Immobilization of Heavy Metals in Long-term Landfilled MSWI Residues Due to Weathering, Proceeding of The Twentieth International Conference on Solid Waste Technology and Management, 953-960, 2005.04.
231. Kentaro MIYAWAKI, Takayuki SHIMAOKA and Masataka HANASHIMA, Characteristic of Heavy Metal Leaching from Landfilled Fly Ash at the High Salinity Condition, Proceedings of The 3rd Intercontinental Landfill Research Symposium, 177-178, 2004.11.
232. Hirofumi NAKAYAMA, Toshio ISHIZAKI, Teppei KOMIYA and Takayuki SHIMAOKA, Satellite Remote Sensing for Large-Scale Landfill Monitoring, Proceedings of The 3rd Intercontinental Landfill Research Symposium, 184-185, 2004.11.
233. Hirofumi Nakayama, Takayuki SHIMAOKA, Kouichi INOUE and Teppei KOMIYA, Non-Destructive and In-situ Inspection of Seams Between Liner Sheets Using a Thermo Graphic Device, Proceedings of the Third Asian-Pacific Landfill Symposium, 131-137, 2004.10.
234. Takayuki SHIMAOKA, Shogo SAKITA, Jung-Joon LEE and Akifumi MOTOHATA, Chemical Transformation of Heavy Metals in Municipal Solid Waste Bottom Ash under Carbonation, Proceedings of the Third Asian-Pacific Landfill Symposium, 549-556, 2004.10.
235. Jung-Joon Lee, Takayuki SHIMAOKA, Kentaro MIYAWAKI, Shogo SAKITA and Thoru MIYAJIMA, Formation and Characterization of Humic Substances in MSWI Residues Landfill Sites, Proceedings of the Third Asian-Pacific Landfill Symposium, 563-567, 2004.10.
236. Qunhui WANG, Wenchao ZHAO, Hongzhi MA and Takayuki SHIMAOKA, Situation and Strategies for Hazardous Waste Management in China, Proceedings of the Third Asian-Pacific Landfill Symposium, 586-591, 2004.10.
237. Kentaro MIYAWAKI, Takayuki SHIMAOKA, Shogo SAKITA and Masataka HANASHIMA, Elution of Heavy Metals from Stabilized Fly Ash in a Landfill, Proceedings of the Third Asian-Pacific Landfill Symposium, 592-599, 2004.10.
238. Toshihito Uchida, Takanori Hirao, Takayuki Shimaoka, Kentaro Miyawaki, Masataka Hanashima,, Application of Bottom Ash as Road Construction Materials, 2004 International Conference on Resource Recovery of Incineration Ash, Taipei County Proceedings, Chapter 4, pp.1-22, 2004.09.
239. Takayuki Shimaoka, Shogo Sakita,, Pretreatment of Bottom Ash for Reuse of Construction Materials, 2004 International Conference on Resource Recovery of Incineration Ash, Taipei County Proceedings, Chapter 6, pp.1-15, 2004.09.
240. Takayuki Shimaoka,, Beneficial Reuse of MSW Incineration Residues for a Recycling-Based Society in Japan, 2004 International Conference on Resource Recovery of Incineration Ash, Taipei County Proceedings, Chapter 10, pp.1-24, 2004.09.
241. A.Saffarzadeh, K.Watanabe, T.Shimaoka, Y.Motomura, Slag Residues from High Temperature Treatment of Municipal Solid Waste (MSW)in Japan-A Petrographic Approach, Proceedings of International symposium on Environmental Issue and Waste Management and Mineral Production - SWEMP2004, 385-390, 2004.05.
242. Lana SARIA, Takayuki SHIMAOKA and Kentaro MIYAWAKI, Elution characteristics of pyrite oxidation in coal mine waste, International Workshop on Earth Science and Technology, 17-22, 2003.11.
243. Amirhomayoun SAFFARZADEH, Koichiro WATANABE, Takayuki SHIMAOKA, and Youshinobu MOTOMURA,, Mineralogical Characteristics of Municipal Solid Waste Melting Residues(SLAG) – Evidence from a High Temperature Treatment Plant in Japan, International Workshop on Earth Science and Technology, 75-79, 2003.11.
244. Kentaro MIYAWAKI, Takayuki SHIMAOKA, Shogo SAKITA and Masataka HANASHIMA, Long-term Landfill Stability of Treated Scrubber Residue, ISWA congress 2003, iw271, 2003.11.
245. Lana SARIA, Takayuki SHIMAOKA and Kentaro MIYAWAKI, Elution Characteristics of Pyrite Oxidation in Coal Mine Waste, Proceedings of International Workshop on Earth Science and Technology, 17-22, 2003.11.
246. Amirhomayoun SAFFARZADEH, Koichiro WATANABE, Takayuki SHIMAOKA and Yoshinobu MOTOMURA, Mineralogical Characteristics of Municipal Solid Waste Melting Residues(SLAG) – Evidence from a High Temperature Treatment Plant in Japan, Proceedings of International Workshop on Earth Science and Technology, 75-79, 2003.11.
247. K. Miyawaki, T. Tanri, F. Hirano, Y. Matsufuji T. Shimaoka, S. Sakita, M. Hanashima, Heavy metal leaching from fly ash under salinity conditions, WASCON 2003, 81-87, 2003.06.
248. M.Soeda, T.Yamato, T.Shimaoka, Application of Scrubber Residue from Municipal Solid Waste to an Admixture for Concrete, Beneficial Use of Recycled Materials in Transportation Application, 299-309, 2003.02.
249. R.Carter, K.H.Gardner, T.Shimaoka, K.Miyawaki, Mechanisms for Reduction of Heavy Metal Leaching by Natural Chemical Weathering Readtion, Beneficial Use of Recycled Materials in Transportation Application, 335-344, 2003.02.
250. K.Sato, K.Miyawaki, M.Hanashima, T.Shimaoka, Dynamics Characteristics of Incineration Residue from Municipal Solid Waste as a Construction Material, Beneficial Use of Recycled Materials in Transportation Application, 441-452, 2003.02.
251. T.Shimaoka, K.Miyawaki, M.Hanashima, T.Hirao, Application of Bottom Ash as a Road Construction Material, Beneficial Use of Recycled Materials in Transportation Application, 759-769, 2003.02.
252. T. Shimaoka, N. Hori, S. Sakita, K. Miyawaki, J. Kano, Stabilization of Landfilled Soild Waste surrounded by Daily Cover Soil, Proceedings of the 2nd Asian Pacific Landfill Symposium 2002, 94-101, 2002.09.
253. K. Miyawaki, T. Shimaoka, M. Hanashima, Influence of Landfilled Chemical Treated Fly Ash to Leachate Quality, Proceedings of the 2nd Asian Pacific Landfill Symposium 2002, 694-701, 2002.09.
254. D.Koga, T.Shimaoka, M. Hanashima, K.Miyawaki,T.Yoshimochi, Circulation purification of the sea pore-waterin sea Landfill site, Proceedings of the 2nd Asian Pacific Landfill Symposium 2002, 407-415, 2002.09.
255. K. Sato, K. Miyawaki, T. Shimaoka, and T.Hirao, Mechanical properties incineration residue from municipal solid waste, Environmental Geotechnics,4th ICEG, Vol.1, 667-672, 2002.08.
256. T.Shimaoka, T.Hirao, K.Miyawaki, M.Hanashima, Application of Bottom Ash from Municipal Soild Waste as Road Construction Materials, Environmental Geotechnics,4th ICEG, Vol.1, 685-689, 2002.08.
257. T.Shimaoka, K.Miyawaki, M.Soeda, M.Hanashima, T.Yoshida, T.Uchida, K.Gardner, T.Eighmy, Mechanism for the Aging-Induced Reduction of Lead Solubility in Scrubber Residues from Municipal Solid Waste Combustion, Waste management & Research Vol 20. No 1. February 2002, 90-98, 2002.02.
258. T. Hirai, T. Shimaoka, K. Sato, K. Miyawaki, M. Hanashima, N. Yasufuku, Long term characteristics of landfilled solid waste composed of bottom ash and incombustible solid waste, Sardinia 00, 8th International Landfill Symposium, The Sustanaible Landfill Vol.Ⅰ, 445-452, 2001.10.
259. C.N.Musselman, T. Shimaoka, R. Yanase, M. A. Sills, Assesing the behavior and fate of mercury in a municipal waste combustor ash landfill, Sardinia 00, 8th International Landfill Symposium, The Sustanaible Landfill Vol.Ⅰ, 627-636, 2001.10.
260. T. Shimaoka, Y. Matsufuji, M. Hanashima, Characteristic and Mechanism of semi-aerobic Landfill on Stabilization on Stabilization of Solid Waste, Intercontinental Landfill Research Symposium, 2000.12.
261. Mechnism of Self - Stabilization of Semi - Aerobic Landfill.
262. K. Miyawaki, T. Shimaoka, M. Hanashima, T. Shinohara, M. NIshigaki, The Mechanism of Lead (Pb) Leachaing from Incinerator Fly Ash in Monodisposal Landfill, Pegamon, Waste Management Series, Vol.1, Waste Materials in Construction, Science and Engineering of Recycling for Environmental Protection, 588-594, 2000.05.
263. T. Shimaoka, K. Miyawaki, M. Hanashima, T. Yoshida, T. Uchida, Heavy Metal Elution Characteristics from Municipal Solid Waste Scrubber Residue by a Certrifugation Method, Pegamon, Waste Management Series, Vol.1, Waste Materials in Construction, Science and Engineering of Recycling for Environmental Protection, 595-603, 2000.05.
264. L.Andreas, H.Ecke, T.Shimaoka, A.Lagerkvist, Chacterizing Landfill Phases at Full-Scale with the Aid of Test Cells, Sardinia 99,7th International Landfill Symposiumc, Landfill Processes and Waste Pre-Treatment, Vol.1, 145-152, 1999.10.
265. T.Shimaoka, K.Miyawaki, M.Hanashima, T.Yoshida, I.Ito, T.Uchida, Insolubility of Pb in Fly Ash Using the Exhaust Gas from Incineration Plant, Sardinia 99,7th International Landfill Symposium, Landfill Processes and Waste Pre-Treatment, Vol.1, 565-572, 1999.10.
266. Treatment of High Salinity Leachate by Reverse Osmosis and Development of Concentrate Treatment.
267. T.Shimaoka,K.Miyawaki,M.Hanashima,T.Yoshida,I.Ito,T.Uchida, Insolubility of Hazardous Heavy Metals in Wet Fly Ashes of Municipal Solid Waste, SWANA's Wastecon 1998, 419-431, 1998.10.