


Moriyasu Nonaka | Last modified date:2020.10.07 |

Assistant Professor /
Resources System Engineering
Department of Earth Resources Engineering
Faculty of Engineering
Department of Earth Resources Engineering
Faculty of Engineering
Graduate School
Undergraduate School
Homepage
https://kyushu-u.pure.elsevier.com/en/persons/moriyasu-nonaka
Reseacher Profiling Tool Kyushu University Pure
http://process.mine.kyushu-u.ac.jp/
Academic Degree
Ph.D
Country of degree conferring institution (Overseas)
No
Field of Specialization
Mineral Processing
Outline Activities
Low rank coal, which has not been fully utilized, makes up half of the known deposits.
Biomass is considered to be carbon-neutral and cultivated vastly in tropic plantations. Peat is present in vast swamps in tropical rainforests. We have focused our efforts on these low-grade carbonaceous materials to upgrade them, extract value-added chemicals from them, and reform them for CO2 gasification, by using hydrothermal treatment.
Biomass is considered to be carbon-neutral and cultivated vastly in tropic plantations. Peat is present in vast swamps in tropical rainforests. We have focused our efforts on these low-grade carbonaceous materials to upgrade them, extract value-added chemicals from them, and reform them for CO2 gasification, by using hydrothermal treatment.
Research
Research Interests
- effective utilization of low quality carbonaceous materials by hydrothermal treatment
keyword : Biomass, Low rank coal, hydrothermal treatment
2006.04Recently, fossil fuel consumption has caused a rise in the atmospheric level of CO2 that is considered to be the main cause of global warming. The reduction of greenhouse gas emission has recently been a global concern for the continuous prosperity. Renewable resources of energy attract attention, because they are CO2 emission reducible as compared with fossil fuels, especially the CO2 emission intensity of biomass is estimated to be zero. Also, biomass has advantages of low ash and sulfur contents but has high water content and low calorific value. Therefore, biomass should be dehydrated and upgraded for an energy resource. The authors have previously reported about the hydrothermal treatments of woody biomass, low rank coal and their mixture known as a hot water drying method. In the series of study, a solid product of ca. 7000 kcal/kg calorific value was obtained from Acacia Mangium , Cryptomeria Japonica , low rank coal and the mixture of Cryptomeria Japonica and low rank coal by using a batch equipment. Oil palm trees have widely been cultivated in Southeast Asia to extract oil. A large quantity of the by-produced empty fruits bunch (EFB) has been expected to be used effectively. Under such a background, we have studied on effective utilization of EFB. In the present study, using the same technique, we have attempted to recover a bio-oil..
- This project aims the development of the CO2-blown integrated gasification combined cycle, using highly concentrated recycled CO2 as the carrier and quench gases.
- The project aims at the production of value added chemicals, steam coal, coking coal and ultra low ash slurry fuel by multistage hydrothermal treatment of unutilized high-moisture-content low rank coal and biomass. Utilizing catechol containing liquid phase, it also aims to suppress the acid mine drainage that is problematic during mining.
- The project aims at scientific proof and establishment of scientific bases of simultaneous upgrading of brown coal and biomass into tar-free active char/charcoal (TFAC), brown-coal/biomass derived coking coal (BCBCC) and light oil, and also downstream processes such as low-temperature/fast gasification of TFAC into syngas and production of high quality coke and advanced carbon materials from BCBCC.
Papers
Presentations
Educational


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