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Naoko Okibe Last modified date：2019.04.01

Associate Professor / Mining Engineering
Department of Earth Resources Engineering
Faculty of Engineering


Graduate School
Department of Earth Resources Engineering
Graduate School of Engineering
Undergraduate School
Department of Earth Resources,Marine and Civil Engineering
School of Engineering
Other Organization
Other
Administration Post
Other


E-Mail
Homepage
http://process.mine.kyushu-u.ac.jp/index.html
Mineral Processing, Recycling & Environmental Remediation Lab. .
Phone
092-802-3312
Fax
092-802-3312
Academic Degree
PhD (Environmental Microbiology)
Country of degree conferring institution (Overseas)
Yes
Field of Specialization
Biohydrometallurgy, Bioremediation, Bioengineering, Environmental Microbiology
Total Priod of education and research career in the foreign country
07years04months
Research
Research Interests
  • Bioleaching of waste catalysts
    keyword : Urban mine, Waste catalyst, Base metals, Rare metals, Bioleaching
    2016.04.
  • Manganese removal from refinery waste waters using Mn(II)-oxidizing bacteria
    keyword : Refinery waste waters, Manganese, Mn(II)-oxidizing bacteria
    2015.04.
  • Bioleaching of waste PCBs
    keyword : Urban mine, Cu, Precious metals, Bioleaching, PCB
    2015.04.
  • Bioleaching of nickel laterite
    keyword : Nickel laterite, bioleaching, Fe(III)-reducing microbes
    2015.04.
  • Bioleaching of refractory copper sulfides
    keyword : Chalcopyrite, Enargite, Extreme acidophiles, Iron-and sulfur-oxidizing microbes, bioleaching
    2015.04.
  • Biooxidation of refractory gold-bearing minerals
    keyword : Arsenopyprite, Extreme acidophiles, Iron-and sulfur-oxidizing archaea, biooxidation
    2013.04.
  • Oxidation and immobilization of arsenite using moderate thermophilic iron-oxidizing bacteria
    keyword : Arsenite, Immobilization, Extreme thermophiles, Iron-oxidizing bacteria
    2013.04.
  • Biorecovery of rare metals and precious metals using acidophilic iron-reducing bacteria
    keyword : rare metals, precious metals, iron-reducing bacteria, biorecovery
    2012.04.
  • Biomineralization
    keyword : Manganese oxide, Microorganisms, Rare metals
    2011.04～2013.03.
  • Bioremediation of toxic heavy metals using acidophilic iron-reducing bacteria
    keyword : Chromate, reduction, iron-reducing bacteria, bioremediation
    2011.04.
  • 2011~: Recovery of selenate from industrial waste water using selenate-reducing bacteria
    keyword : Selenate, Waster water, Selenate-reducing bacteria
    2011.04～2013.03.
  • 2011~: Immobilization of arsenite from the refining discharge using Acidianus brierleyi in the presence of pyrite
    keyword : Arsenite, Immobilization, Extreme thermophiles, Iron-oxidizing archaea
    2011.04.
Academic Activities
Reports
 Show All Reports >>
1. KB Hallberg, N Okibe, Y Liu, DB Johnson, “Survey of bioleaching reactor microbial communities” , BioMinE Deliverable DII.4: Microbial consortia and mineral processing. pp 326-334, 2008.10.
Papers
 Show All Papers >>
1. Santisak Kitjanukit, Kyohei Takamatsu, Naoko Okibe, “Natural Attenuation of Mn(II) in Metal Refinery Wastewater: Microbial Community Structure Analysis and Isolation of a New Mn(II)-Oxidizing Bacterium Pseudomonas sp. SK3.”, Water, 11, 507, 2019.03.
2. Intan Nurul Rizki, Yu Tanaka, Naoko Okibe, “Thiourea bioleaching for gold recycling from e-waste.”, Waste Management, 84, 158-165, 2019.02.
3. Yusei Masaki, Katsutoshi Tsutsumi, Naoko Okibe, “Iron redox transformation by the thermo-acidophilic archaea from the genus Sulfolobus.”, Geomicrobiology Journal, doi.org/10.1080/01490451.2018.1465491, 35, 9, 757-767, 2018.10.
4. Masahito Tanaka, Keiko Sasaki, Naoko Okibe, “Behavior of sulfate ions during biogenic scorodite crystallization from dilute As(III)-bearing acidic waters.”, Hydrometallurgy, 180, 144-152, 2018.07.
5. Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, “Microbiological Redox Potential Control to Improve the Efficiency of Chalcopyrite Bioleaching.”, Geomicrobiology Journal, 35, 8, 648-656, 2018.04.
6. Keishi Oyama, Kazuhiko Shimada, Jun-ichiro Ishibashi, Hajime Miki, Naoko Okibe, “Silver-catalyzed bioleaching of enargite concentrate using moderately thermophilic microorganisms.”, Hydrometallurgy, 177, 197-204, 2018.03.
7. Intan Nurul Rizki, Naoko Okibe, “Size-Controlled Production of Gold Bionanoparticles Using the Extremely Acidophilic Fe(III)-Reducing Bacterium, Acidocella aromatica.”, Minerals, 8, 81, 1-11, 2018.02.
8. Masahito Tanaka, Naoko Okibe, “Factors to Enable Crystallization of Environmentally Stable Bioscorodite from Dilute As(III)-Contaminated Waters.”, Minerals, 8, 23, 1-16, 2018.01.
9. Naoko Okibe, Daisuke Nakayama, Takahiro Matsumoto, “Palladium bionanoparticles production from acidic Pd(II) solutions and spent catalyst leachate using acidophilic Fe(III)-reducing bacteria.”, Extremophiles, 21, 6, 1091-1100, 2017.10.
10. Yuta Era, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, “Microbiological As(III) oxidation and immobilization as scorodite at moderate temperatures.”, Solid State Phenomena, 262, 664-667, 2017.08.
11. Santisak Kitjanukit, Kyohei Takamatsu, Kenji Takeda, Satoshi Asano, Naoko Okibe, “Manganese removal from metal refinery wastewater using Mn(II)-oxidizing bacteria.”, Solid State Phenomena, 262, 673-676, 2017.08.
12. Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, “Mechanism of silver-catalyzed bioleaching of enargite concentrate.”, Solid State Phenomena, 262, 273-276, 2017.08.
13. Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, “Optimization of bioscorodite crystallization for treatment of As(III)-bearing wastewaters.”, Solid State Phenomena, 262, 555-558, 2017.08.
14. Naoko Okibe, Shiori Morishita, Masahito Tanaka, Keiko Sasaki, Tsuyoshi Hirajima, Kazuhiro Hatano, Atsuko Ohata, “Bioscorodite crystallization using Acidianus brierleyi: Effects caused by Cu(II) present in As(III)-bearing copper refinery wastewaters.”, Hydrometallurgy, 168, 121-126, 2016.07.
15. Yusei Masaki, Katsutoshi Tsutsumi, Shin-ichi Hirano, Naoko Okibe, “Microbial community profiling of the Chinoike Jigoku (“Blood Pond Hell”) hot spring in Beppu, Japan: isolation and characterization of Fe(III)-reducing Sulfolobus sp. strain GA1.”, Research in Microbiology, 10.1016/j.resmic.2016.04.011, 167, 7, 595-603, 2016.05.
16. Naoko Okibe, Masashi Maki, Daisuke Nakayama, Keiko Sasaki, “Microbial recovery of vanadium by the acidophilic bacterium, Acidocella aromatica.”, Biotechnology Letters, 10.1007/s10529-016-2131-2, 38, 1475-1481, 2016.05.
17. Yusei Masaki, Shin-ichi Hirano, Naoko Okibe, “Microbial Community Structure Analysis of Blood Pond Hell Hot Spring in Japan and Search for Metal-Reducing Microbes.”, Advanced Materials Research, 10.4028/www.scientific.net/AMR.1130.45, 1130, 45-49, 2015.11.
18. Naoko Okibe, Shiori Morishita, Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, “Effect of Cu(II) on Bio-Scorodite Crystallization Using Acidianus brierleyi.”, Advanced Materials Research, 10.4028/www.scientific.net/AMR.1130.101, 1130, 101-104, 2015.11.
19. Widi Astuti, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, “Utilization of Metabolic Citric Acid from Aspergillus niger Using Corn Starch in the Nickel Leaching of Indonesian Saprolitic Ore.”, Advanced Materials Research, 10.4028/www.scientific.net/AMR.1130.251, 1130, 251-254, 2015.11.
20. Masahito Tanaka, Yuta Yamaji, Yuken Fukano, Kazuhiko Shimada, Junichiro Ishibashi, Tsuyoshi Hirajima, Keiko Sasaki, Mitsuru Sawada, Naoko Okibe, “Biooxidation of gold-, silver, and antimony-bearing highly refractory polymetallic sulfide concentrates, and its comparison with abiotic pre-treatment techniques.”, Geomicrobiology Journal, 10.1080/01490451.2014.981645, 32, 6, 538-548, 2015.07.
21. Naoko Okibe, Kiyomasa Sueishi, Mikoto Koga, Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Shinichi Heguri, Satoshi Asano, “Selenium (Se) removal from copper refinery wastewater using a combination of zero-valent iron (ZVI) and Se(VI)-reducing bacterium, Thaurea selenatis.”, Materials Transactions, 10.2320/matertrans.M2014457, 56, 6, 889-894, 2015.05.
22. Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, “Bioreduction and immobilization of hexavalent chromium by the extremely acidophilic Fe(III)-reducing bacterium Acidocella aromatica strain PFBC.”, Extremophiles, 10.1007/s00792-015-0733-6, 19, 2, 495-503, 2015.03.
23. Naoki Higashidani, Takashi Kaneta, Nobuyuki Takeyasu, Shoji Motomizu, Naoko Okibe, Keiko Sasaki, “Speciation of arsenic in a thermoacidophilic iron-oxidizing archaeon, Acidianus brierleyi, and its culture medium by inductively coupled plasma-optical emission spectroscopy combined with flow injection pretreatment using an anion-exchange mini-column”, Talanta, 122, 240-245, 2014.03.
24. Naoko Okibe, Masaharu Koga, Shiori Morishita, Masahito Tanaka, Shinichi Heguri, Satoshi Asano, Keiko Sasaki, Tsuyoshi Hirajima, “Microbial formation of crystalline scorodite for treatment of　As(III)-bearing copper refinery process solution using Acidianus brierleyi”, Hydrometallurgy, http://dx.doi.org/10.1016/j.hydromet.2014.01.008, 143, 34-41, 2014.03.
25. Naoko Okibe, Masaharu Koga, Keiko Sasaki, Tsuyoshi Hirajima, Shinichi Heguri, Satoshi Asano, “Simultaneous oxidation and immobilization of arsenite from refinery waste water by thermoacidophilic iron-oxidizing archaeon, Acidianus brierleyi”, Minerals Engineering, 48, 126-134, 2013.07.
26. Naoko Okibe, Masashi Maki, Keiko Sasaki, Tsuyoshi Hirajima, “Mn(II)-oxidizing activity of Pseudomonas sp. strain MM1 is involved in the formation of massive Mn sediments around Sambe hot　springs in Japan”, Materials Transactions, 54, 2027-2031, 2013.07.
27. Naoko Okibe, Nobuaki Suzuki, Masayuki Inui, Hideaki Yukawa, "pCGR2 copy number depends on the par locus that forms a ParC-ParB-DNA partition complex in Corynebacterium glutamicum", Journal of Applied Microbiology, 115, 495-508, 2013.04.
28. Keiko Sasaki, Yoshitaka Uejima, Atsushi Sakamoto, Yu Qianqian, Junichiro Ishibashi, Naoko Okibe, Tsuyoshi Hirajima, “Geochemical and Microbiological Analysis of Sambe hot springs, Shimane Prefecture, Japan”, Resource Geology, 63, 2, 155-165, 2013.03.
29. T Hirajima, Y Aiba, M Farahat, N Okibe, K Sasaki, T Tsuruta, K Doi, “Effect of microorganisms on flocculation of quarts”, International Journal of Mineral Processing, 102-103, 107-111, 2012.01.
30. T Hirajima, Y Aiba, M Farahat, N Okibe, K Sasaki, T Tsuruta, K Doi, “Flocculation of quarts by microorganisms”, Biohydrometallurgy; biotech key to unlock mineral resources value (G Qiu, T. jiang, W. Qin, X. Liu, Y. Tang and H. Wang eds). Central South University, Changsha, China, 441-444, 2011.09.
31. K Sasaki, M Koga, K Takatsugi, N Okibe, T Hirajima, S Asano, S Heguri　, “Immobilization of arsenite from the refining discharge using Acidianus brierleyi in the presence of pyrite.” , Biohydrometallurgy; biotech key to unlock mineral resources value (G Qiu, T. jiang, W. Qin, X. Liu, Y. Tang and H. Wang eds). Central South University, Changsha, China, 1106-1108, 2011.09.
32. N Okibe, DB Johnson, “A rapid ATP-based method for determining active microbial populations in mineral leach liquors” , Hydrometallurgy, 108, 3-4, 195–198, 2011.07.
33. N Okibe, N Suzuki, M Inui, H Yukawa, “Efficient markerless gene replacement in Corynebacterium glutamicum using a new temperature-sensitive plasmid” , Journal of Microbiological Methods, 85, 2, 155-163, 2011.05.
34. N Okibe, N Suzuki, M Inui, H Yukawa, “Antisense RNA-mediated plasmid number control in pCG1-family plasmids, pCGR2 and pCG1, in Corynebacterium glutamicum” , Microbiology, 156, Pt 12, 3609-3623, 2010.12.
35. N Okibe, N Suzuki, M Inui, H Yukawa, “Isolation and evaluation of two strong, carbon source-inducible promoters from Corynebacterium glutamicum” , Letters in Applied Microbiology, 50, 2, 173-180, 2010.02.
36. DB Johnson, P Bacelar-Nicolau, N Okibe, A Thomas, KB Hallberg, “Ferrimicrobium acidiphilum gen. nov., sp. nov., and Ferrithrix thermotolerans gen. nov., sp. nov.: heterotrophic iron-oxidizing, extremely acidophilic Actinobacteria.” , International Journal of Systematic and Evolutionary Microbiology., 59, 5, 1082-1089, 2009.05.
37. N Suzuki, K Watanabe, N Okibe, Y Tsuchida, M Inui, H Yukawa, “Identification of new secreted proteins and secretion of heterologous amylase by C. glutamicum.” , Applied Microbiology and Biotechnology, 82, 3, 491-500, 2009.03.
38. K Watanabe, Y Tsuchida, N Okibe, H Teramoto, N Suzuki, M Inui, H Yukawa, “Scanning the Corynebacterium glutamicum R genome for high-efficiency secretion signal sequences.” , Microbiology, 155, 3, 741-750, 2009.03.
39. DB Johnson, N Okibe, K Wakemana, L Yajie, “Effect of temperature on the bioleaching of chalcopyrite concentrates containing different concentrations of silver” , Hydrometallurgy, 94, 1-4, 42-47, 2008.11.
40. DB Johnson, L.Yajie, N Okibe, ““Bioshrouding”―a novel approach for securing reactive mineral tailings.” , Biotechnology Letters, 30, 3, 445-449, 2008.03.
41. MA Ghauri, N Okibe, DB Johnson, "Attachment of acidophilic bacteria to solid surfaces: The significance of species and strain variations.” , Hydrometallurgy, 85, 72-80, 2007.03.
42. N Okibe, DB Johnson, “Bioleaching of pyrite by defined mixed populations of moderately thermophilic acidophiles in pH-controlled bioreactors.” , Biohydrometallurgy; a sustainable technology in evolution (Tsezos, M., Hatzikioseyian, A. and Remoudaki, E., eds.). National Technical University of Athens, Zografou, Greece, 165-173, 2004.09.
43. N Okibe, DB Johnson, “Biooxidation of pyrite by defined mixed cultures of moderately thermophilic acidophiles in pH-controlled bioreactors: significance of microbial interactions.” , Biotechnology and Bioengineering, 87, 5, 574-583, 2004.09.
44. DB Johnson, N Okibe, KB Hallburg, “Differentiation and identification of iron-oxidizing acidophilic bacteria using cultivation techniques and amplified ribosomal DNA restriction enzyme analysis.”, Journal of Microbiological Methods, 60, 3, 299-313, 2005.03.
45. DB Johnson, N Okibe, FF Roberto, “Novel thermo-acidophilic bacteria isolated from geothermal sites in Yellowstone National Park: physiological and phylogenetic characteristics.”, Archives of Microbiology, 180, 1, 60-68, 2003.07.
46. N Okibe, M Gericke, KB Hallberg, DB Johnson, “Enumeration and characterization of acidophilic microorganisms isolated from a pilot plant stirred-tank bioleaching　operation.” , Applied and Environmental Microbiology, 69, 4, 1936-1943, 2003.04.
47. N Okibe, DB Johnson, “Toxicity of flotation chemicals to moderately thermophilic bioleaching microorganisms.” , Biotechnology Letters, 24, 23, 2011-2016, 2002.12.
48. DB Johnson, P Bacelar-Nicolau, N Okibe, A Yahya, KB Hallberg, “Role of pure and mixed cultures of Gram-positive eubacteria in mineral leaching.”, Biohydrometallurgy:　Fundamentals, Technology and Sustainable Development. (Ciminelli, V. S. T. and Garcia Jr., O., eds.) Amsterdam, Elsevier, 11A, 461-470, 2001.09.
49. N Okibe, DB Johnson, “Bioleaching of pyrite by defined mixed cultures of moderately thermophilic acidophiles.”, Biohydrometallurgy: Fundamentals,　Technology and Sustainable Development. (Ciminelli, V. S. T. and Garcia Jr., O., eds.) Amsterdam, Elsevier, 11A, 443-451, 2001.09.
50. N Okibe, K Amada, S Hirano, M Haruki, T Imanaka, M Morikawa, S Kanaya, “Gene cloning and Characterization of Aldehyde Dehydrogenase from a Petroleum-Degrading bacterium, Strain HD-1.” , Journal of Bioscience and Bioengineering, 88, 1, 7-11, 1999.07.
Presentations
 Show All Presentations >>
1. Santisak Kitjanukit, Naoko Okibe, Synergistic effect of natural Mn oxide, activated carbon and Mn(II)-oxidizing bacteria on oxidative removal of Mn(II) from wastewaters, International Symposium on Earth Science and Technology 2018, 2018.11.
2. Keishi Oyama, Hajime Miki, Naoko Okibe, Evaluation of Catalytic Effect of Activated Carbon on Enargite Bioleaching, International Symposium on Earth Science and Technology 2018, 2018.11.
3. Yusuke Hotta, Naoko Okibe, Oxidative removal of arsenic using activated carbon, International Symposium on Earth Science and Technology 2018, 2018.11.
4. Kyohei Takamatsu, Keishi Oyama, Hajime Miki, Naoko Okibe, Carbon-assisted bioleaching of chalcopyrite concentrate, International Symposium on Earth Science and Technology 2018, 2018.11.
5. Haruki Noguchi, Naoko Okibe, Saline water bioleaching of refractory chalcopyrite concentrate, International Symposium on Earth Science and Technology 2018, 2018.11.
6. Ryohei Nishi, Santisak Kitjanukit, Naoko Okibe, Oxidation and immobilization of arsenite using biogenic manganese oxide
, International Symposium on Earth Science and Technology 2018, 2018.11.
7. Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Behavior of Sulfate Ion during Formation of Bioscorodite for Arsenite Immobilization, International Symposium on Earth Science and Technology 2017, 2017.11.
8. Intan Nurul Rizki, Tsuyoshi Hirajima, Naoko Okibe, Bioleaching and recovery of gold from E-waste, International Symposium on Earth Science and Technology 2017, 2017.11.
9. Santisak Kitjanukit, Kyohei Takamatsu, Kenji Takeda, Satoshi Asano, Naoko Okibe, Isolation and characterization of a new Mn(II)-oxidizing bacterial strain from Mn-containing metal-refinery wastewater deposit, International Symposium on Earth Science and Technology 2017, 2017.11.
10. Keishi Oyama, Haruki Noguchi, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Catalytic effect of activated carbon on bioleaching of enargite concentrate, International Symposium on Earth Science and Technology 2017, 2017.11.
11. Yuta Era, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Low-temperature bioscorodite formation for As(III) removal, International Symposium on Earth Science and Technology 2017, 2017.11.
12. Melisa Pramesti Dewi, Himawan Tri Bayu Murti Petrus, Naoko Okibe, Recovery of rare-earth element from spent hydroprocessing catalyst, International Symposium on Earth Science and Technology 2017, 2017.11.
13. Yusuke Hotta, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Activated carbon-assisted oxidation and immobilization of highly toxic arsenite, International Symposium on Earth Science and Technology 2017, 2017.11.
14. Kyohei Takamatsu, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbiological redox control for bioleaching of chalcopyrite concentrate, International Symposium on Earth Science and Technology 2017, 2017.11.
15. Ryohei Nishi, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Effect of seed feeding and oxygen supply on bioscorodite crystallization, International Symposium on Earth Science and Technology 2017, 2017.11.
16. Intan Nurul Rizki, Tsuyoshi Hirajima, Naoko Okibe, Microbiological Potential for Gold Leaching and Recovery from E-waste, Earth 2017, 2017.09.
17. Melisa Pramesti Dewi, Himawan Petrus, Naoko Okibe , Characterization and Acid Leaching of Spent Hydroprocessing Catalyst for Valuable Metal Recovery, Earth 2017, 2017.09.
18. Yusuke Hotta, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, As(III) oxidation and immobilization by activated carbon, Earth 2017, 2017.09.
19. Kyohei Takamatsu, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Optimization of microbiological redox potential control in chalcopyrite bioleaching, Earth 2017, 2017.09.
20. Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Optimization of Bioscorodite Crystallization for Treatment of As(III)-bearing Wastewaters, International Biohydrometallurgy Symposium 2017, 2017.09.
21. Santisak Kitjanukit, Kyohei Takamatsu, Kenji Takeda, Satoshi Asano, Naoko Okibe, Manganese Removal from Metal Refinery Wastewater using Mn(II)-oxidizing Bacteria
, International Biohydrometallurgy Symposium 2017, 2017.09.
22. Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe , Mechanism of silver-catalyzed bioleaching of enargite concentrate, International Biohydrometallurgy Symposium 2017, 2017.09.
23. Yuta Era, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbiological As(III) oxidation and immobilization as scorodite at moderate temperatures, International Biohydrometallurgy Symposium 2017, 2017.09.
24. Santisak Kitjanukit, 平島 剛, 笹木 圭子, 沖部 奈緒子, 超好酸性古細菌 Sulfolobus tokodaii によるバイオパラジウムナノ粒子の生成, 資源・素材学会, 2017.03.
25. Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, The effect of microbiological redox potential control on Cu extraction in the chalcopyrite bioleaching system, International Symposium on Earth Science and Technology 2016, 2016.12.
26. Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Evaluating factors affecting bioscorodite crystallization from As(III)-bearing acidic metal refinery wastewaters, International Symposium on Earth Science and Technology 2016, 2016.12.
27. Santisak Kitjanukit, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbially Facilitated Formation of Highly Catalytic Pd(0) Nanoparticles Using an Extremely Acidophilic Archaeon, Sulfolobus tokodaii, International Symposium on Earth Science and Technology 2016, 2016.12.
28. Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Investigating catalytic effect of silver on bioleaching of enargite concentrate
, International Symposium on Earth Science and Technology 2016, 2016.12.
29. Katsutoshi Tsutsumi, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Recovery of nickel via reductive bioleaching of Indonesian limonite ore, International Symposium on Earth Science and Technology 2016, 2016.12.
30. Takahiro Matsumoto, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Biorecovery of Pt(0)-nanoparticles using extremely acidophilic Fe(III)-reducing bacteria, International Symposium on Earth Science and Technology 2016, 2016.12.
31. Yuta Era, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Arsenic immobilization as bioscorodite at moderate temperatures, International Symposium on Earth Science and Technology 2016, 2016.12.
32. Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Chalcopyrite bioleaching with redox potential control, Copper 2016, 2016.11.
33. Masahito Tanaka, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Bioscorodite crystallization for treatment of As(III)-bearing copper refinery wastewaters, Copper 2016, 2016.11.
34. Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Selective bioleaching of enargite (Cu3AsS4) over pyrite (FeS2) for copper recovery, Copper 2016, 2016.11.
35. Naoko Okibe, Biohydrometallurgy for mineral processing and environmental remediation: State of the art and the development, International Symposium on Environment and Resource Recycling Technology 2016, 2016.03.
36. Yusei Masaki, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Bioleaching of highly refractory chalcopyrite in the presence of silver catalyst, International Symposium on Earth Science and Technology 2015, 2015.12.
37. Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Kazuhiro Hatano, Atsuko Ohata, Naoko Okibe, Crystallization of biogenic scorodite (FeAsO4·2H2O) from acidic wastewaters containing diluted concentrations of highly toxic arsenite, International Symposium on Earth Science and Technology 2015, 2015.12.
38. Yuken Fukano, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Mechanism of indirect chemical oxidation of highly toxic As(III), in the presence of carbon fiber via direct microbial Fe(II) oxidation, International Symposium on Earth Science and Technology 2015, 2015.12.
39. Daisuke Nakayama, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Investigating factors affecting the size and distribution of Bio-Pd(0) nanoparticles, International Symposium on Earth Science and Technology 2015, 2015.12.
40. Santisak Kitjanukit, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Application of Fe(II)-oxidizing and Fe(III)-reducing abilities of the thermo-acidophilic archaeon, Sulfolobus tokodaii for bioleaching of waste printed circuit boards (WPCB) and formation of Pd(0)-nanoparticles, International Symposium on Earth Science and Technology 2015, 2015.12.
41. Keishi Oyama, Tsuyoshi Hirajima, Keiko Sasaki, Hajime Miki, Naoko Okibe, Selective bioleaching of enargite (Cu3AsS4) over pyrite (FeS2) for Cu recovery, International Symposium on Earth Science and Technology 2015, 2015.12.
42. Katsutoshi Tsutsumi, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Effect of Fe(III)-reducing microbes on organic acid leaching of nickel laterite, International Symposium on Earth Science and Technology 2015, 2015.12.
43. Takahiro Matsumoto, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Formation of Pt(0) nanoparticles using the extremely acidophilic Fe(III)-reducing bacteria, International Symposium on Earth Science and Technology 2015, 2015.12.
44. Naoko Okibe, Biohydrometallurgy for mineral processing and environmental remediation: State of the art and the development, sntki2015, 2015.10.
45. Naoko Okibe, Shiori Morishita, Masahito Tanaka, Tsuyoshi Hirajima, Keiko Sasaki, Effect of Cu(II) on bio-scorodite crystallization using Acidianus brierleyi, International Biohydrometallurgy Symposium 2015, 2015.10.
46. Widi Astuti, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Utilization of metabolic citric acid from Aspergillus niger using corn starch in the nickel leaching of Indonesian saprolitic ore, International Biohydrometallurgy Symposium 2015, 2015.10.
47. Yusei Masaki, Shin-ichi Hirano, Naoko Okibe, Microbial community structure analysis of Blood Pond Hell hot spring in Japan and search for metal-reducing microbes, International Biohydrometallurgy Symposium 2015, 2015.10.
48. Widi Astuti, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Effect of leaching reagent on the atmospheric dissolution of indonesian saprolitic ore., International Symposium on Earth Science and Technology 2014, 2014.12.
49. Yusei Masaki, Katsutoshi Tsutsumi, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbial community structure analysis of Chinoike-Jigoku (Blood-Pond Hell) hot spring and search for useful microorganisms applicable to bioremediation of heavy metals., International Symposium on Earth Science and Technology 2014, 2014.12.
50. Shiori Morishita, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Effect of Cu(II) on microbial scorodite crystallization from As(III)-containing copper refinery waste-waters., International Symposium on Earth Science and Technology 2014, 2014.12.
51. Masahito Tanaka, Yuta Yamaji, Yuken Fukano, Tsuyoshi Hirajima, Keiko Sasaki, Mitsuru Sawada, Naoko Okibe, Biooxidation of Alaskan refractory gold ore concentrates, International Symposium on Earth Science and Technology 2014, 2014.12.
52. Daisuke Nakayama, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Formation of Bio-Pd(0) nanoparticles using Fe(III)-reducing, extremely acidophilic bacteria., International Symposium on Earth Science and Technology 2014, 2014.12.
53. Yuken Fukano, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Arsenite removal using acidophilic Fe(II)-oxidizing bacteria in the presence of carbon fiber., International Symposium on Earth Science and Technology 2014, 2014.12.
54. Takahiro Matsumoto, Tsuyoshi Hirajima, Keiko Sasaki, Naoko Okibe, Microbial synthesis of platinum nanoparticles using extremely acidophilic iron-reducing bacteria., International Symposium on Earth Science and Technology 2014, 2014.12.
55. アストゥティ　ウィディ, 平島 剛, 笹木 圭子, 沖部 奈緒子, 特性評価およびスラウェシ島（インドネシア）からのサプロライトラテライトの大気クエン酸浸出：ミネラル溶出挙動への洞察, 資源・素材学会, 2014.09.
56. Naoko Okibe, Use of extremophiles for treatment of metal-polluted wastewaters, クリタ 水・環境科学研究　優秀賞成果発表講演, 2014.08.
57. Naoko Okibe, Masahito Tanaka, Mitsuru Sawada, Keiko Sasaki, Tsuyoshi Hirajima, Biooxidation of Alaskan refractory gold ore concentrates, Biohydrometallurgy `14, 2014.06.
58. Astuti Widi, 平島 剛, 笹木 圭子, 沖部 奈緒子, 大気圧下でのクエン酸によるハルマヘラ島（インドネシア）産低グレード褐鉄鉱鉱石のニッケル抽出, 資源・素材学会, 2014.03.
59. Masahito Tanaka, Mitsuru Sawada, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Biooxidation of refractory gold ore concentrates using moderately thermophilic, acidophilic bacteria, International Conference on Biological, Civil, and Environmental Engineering (BCEE-2014), 2014.03.
60. Naoko Okibe, Formation of biogenic scorodite (FeAsO4·2H2O) for treatment of As(III)-bearing copper refinery process solution, Biotechnology and Chemistry for GREEN GROWTH, 2014.03.
61. Shiori Morishita, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, As(III)-oxidation activity of thermo-acidophilic iron sulfur-oxidizing archaeon, Acidianus brierleyi, and its use in biogenic scorodite (FeAsO4) formation, International Symposium on Earth Science and Technology 2013, 2013.12.
62. Masashi Maki, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Biorecovery of vanadium (V) using Fe(III)-reducing, acidophilic bacterium, Acidocella aromatica strain PFBC, International Symposium on Earth Science and Technology 2013, 2013.12.
63. Yusei Masaki, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Fundamental study on Cr(VI) reduction by acidophilic Fe(III)-reducing bacterium, International Symposium on Earth Science and Technology 2013, 2013.12.
64. Daisuke Nakayama, Keiko Sasaki, Tsuyoshi Hirajima, Naoko Okibe, Formation of Pd(0) nanoparticles by bioreduction of Pd(II) using Fe(III)-reducing, acidophilic bacteria, International Symposium on Earth Science and Technology 2013, 2013.12.
65. 正木　悠聖, 沖部 奈緒子, 笹木 圭子, 平島 剛, 好酸性鉄還元細菌によるCr(VI)還元に関する基礎的研究, 資源・素材学会, 2013.09.
Membership in Academic Society
  • Japan Society for Environmental Biotechnology
  • The Society for Biotechnology, Japan
  • The Mining and Materials Processing Institute of Japan
Educational
Other Educational Activities
  • 2017.08.


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