嫌気性膜分離リアクターによる排水からのバイオエネルギー回収と汚泥低減

2015 Fiscal Year Annual Research Report

• Project/Area Number: 14F04916
• Research Institution: National Institute for Environmental Studies
• Principal Investigator: 徐 開欽 国立研究開発法人国立環境研究所, 資源循環・廃棄物研究センター, 主席研究員 (20250722)
• Co-Investigator(Kenkyū-buntansha): ZHEN GUANG-YIN 国立研究開発法人国立環境研究所, 資源循環・廃棄物研究センター, 外国人特別研究員
• Project Period (FY): 2014-04-25 – 2016-03-31
• Keywords: Electromethanogenesis / Co-digestion / Renewable energy / Sweage sludge

Outline of Annual Research Achievements

膜分離リアクターおよび高次処理工程から発生する難分解性の汚泥や植物、藻類バイオマスをエネルギー化するために、電気分解と嫌気性処理を組み合わせた微生物電気分解槽(MEC)や混合メタン発酵等を検討した。MECでは、TiRuO2電極を使用して、異なる電圧印加条件の下でメタン生成量や安定性を評価した。沈水植物を原料とした連続実験において、メタン収率と固形物可溶化が通電下で明らかに改善した。1V下で最も高いメタン生成速度である248.2±21.0 mL/L/dを記録した。また、藻類バイオマスに対して生ごみを混合したメタン発酵では、混合比が藻類:生ごみ=2:8のVS比で最高のメタン収率 639.8±1.3 mL/g VSaddedを記録した。これは単独で藻類を原料とした場合の5倍程度の数値であり、エネルギー回収性の改善に役立つことが示唆された。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Promoted electromethanosynthesis in a two-chamber microbial electrolysis cells (MECs) containing a hybrid biocathode covered with graphite felt (GF) (2016)
  • Author(s): Zhen, G.Y., Lu, X.Q., Kobayashi, T., Kumar, G., Xu, K.Q.
  • Journal Title: Chemical Engineering Journal Volume: 284 Pages: 1146-1155
  • DOI: 10.1016/j.cej.2015.09.071
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Biomethane recovery from Egeria densa in a microbial electrolysis cells (MEC)-assisted anaerobic system: performance and stability assessment (2016)
  • Author(s): Zhen, G.Y., Kobayashi, T., Lu, X.Q., Kumar, G., Xu, K.Q.
  • Journal Title: Chemosphere Volume: 149 Pages: 121-129
  • DOI: 10.1016/j.chemosphere.2016.01.101
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Impact of pH control and heat pre-treatment of seed inoculum in dark H2 fermentation: a feasibility report using mixed microalgae biomass as feedstock (2016)
  • Author(s): Kumar, G., Zhen, G.Y., Kobayashi, T., Sivagurunathan, P., Kim, S.H, Xu, K.Q.
  • Journal Title: International Journal of Hydrogen Energy Volume: 41 Pages: 4382-4392
  • DOI: 10.1016/j.ijhydene.2015.08.069
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Application of a CO2-stripping system for calcium removal to upgrade organic matter removal and sludge granulation in a leachate-fed EGSB bioreactor (2016)
  • Author(s): Lu, X.Q., Chen, S.P, Luo, J.H., Qian, G.R., Liu, J.Y., Zhen, G.Y, Li Y.Y.
  • Journal Title: RSC Advances Volume: 6 Pages: 9286-9296
  • DOI: 10.1039/C5RA26444H
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Mesophilic anaerobic co-digestion of waste activated sludge and Egeria densa: Performance assessment and kinetic analysis (2015)
  • Author(s): Zhen, G.Y, Lu, X., Kobayashi, T., Li Y.Y., Xu, K., Zhao, Y.C.
  • Journal Title: Applied Energy Volume: 141 Pages: 78-86
  • DOI: 10.1016/j.apenergy.2015.03.038
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Understanding methane bioelectrosynthesis from carbon dioxide in a two-chamber microbial electrolysis cells (MECs) containing a carbon biocathode (2015)
  • Author(s): Zhen, G.Y, Kobayashi, T., Lu, X., Xu, K.
  • Journal Title: Bioresource Technology Volume: 186 Pages: 141-148
  • DOI: 10.1016/j.biortech.2015.03.064
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The use of the core-shell structure of zero-valent iron nanoparticles (NZVI) for long-term removal of sulphide in sludge during anaerobic digestion (2015)
  • Author(s): Su, L., Zhen, G.Y., Zhang, L., Zhao, Y.C., Niu, D., Chai, X.
  • Journal Title: Environmental Science: Processes & Impacts Volume: 17 Pages: 2013-2021
  • DOI: 10.1039/C5EM00470E
  • Peer Reviewed
• [Presentation] Bioelectrochemical treatment of liquid fraction of pressed municipal solid waste (LPW) for biohydrogen production in a single-chamber membrane-less microbial electrolysis cell (2016)
  • Author(s): Zhen, G.Y., Kobayashi, T., Xu, K.
  • Organizer: The 50th Annual Coference of Japan Society on Water Environment
  • Place of Presentation: Tokusima, Japan
  • Year and Date: 2016-03-16 – 2016-03-18
• [Presentation] Hydrogen production from MSW (municipal solid waste) leachate in single-chamber microbial electrolysis cells (MECs) (2015)
  • Author(s): Zhen, G.Y., Lu, X.Q., Kobayashi, T., Kumar, G., Xu, K.
  • Organizer: APEC-BPT/ ABBS-2015
  • Place of Presentation: Ken-Ting, Taiwan
  • Year and Date: 2015-09-21 – 2015-09-24
  • Int'l Joint Research
• [Presentation] Promoting electromethanosynthesis in a two-chamber microbial electrolysis cells (MECs) (2015)
  • Author(s): Zhen, G.Y., Kobayashi, T., Xu, K.
  • Organizer: “Green Energy”-Cooperation of the higher education sector for the development of green economy in the area of energetics-TAMOP-4.1.1.C-12/1/ KONV-2012-0017
  • Place of Presentation: University of Pannonia, Veszpern, Hungary
  • Year and Date: 2015-05-28 – 2015-06-07
  • Int'l Joint Research / Invited