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Upgrading on-site bio methanation system using composites of crystalline fatty acid and biofilm

Research Project

Project/Area Number 20K04764
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 22060:Environmental systems for civil engineering-related
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

Kobayashi Takuro  国立研究開発法人国立環境研究所, 資源循環領域, 主幹研究員 (10583172)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsオンサイトバイオマス利用 / 油脂 / メタン発酵 / 廃油脂 / 高級脂肪酸 / 生ごみ / 生物膜 / 厨房排水 / 脂肪酸 / 晶析 / 嫌気性処理
Outline of Research at the Start

廃油脂の利用による商業施設オンサイトバイオガス化システムの導入促進を目的として、生物膜方式と高級脂肪酸不溶化を組み合わせた処理システムを構築する。初年度には生物膜方式の高油分原料のメタン発酵における利点を実験的に明らかにする。初年度から2年度にかけて脂肪酸結晶化に伴う阻害軽減と生物膜発達促進を意図する複合凝集物の形成条件を明らかにする。最終年度には、その複合凝集物を用いた生物膜方式の処理が、阻害軽減と廃油脂の分解促進に及ぼす影響を連続実験で評価する。

Outline of Final Research Achievements

Co-digestion of various feedstocks available on-site is needed for decentralized biomass utilization system.To overcome the limited biomass feedstock availability, use of fat, oil and grease waste is a promising way. In the co-digestion of oily organic wastes, an inhibition by long-chain fatty acids can destabilize the process. In this study, we clarified the inhibitory properties of mesophilic and thermophilic anaerobic digestion, and showed that increasing the concentration of microorganisms enables stable and high-energy-yield treatment.

Academic Significance and Societal Importance of the Research Achievements

既に実装されているオンサイトでの食品廃棄物メタン発酵処理システムのさらなる普及のため、利用できる原料の制約を緩和し、現地で手に入るバイオマス原料を最大限に利用することで導入に必要な規模を縮小することが可能になる。このことは、依然として進まない外食産業の食品廃棄物リサイクル率を底上げすることに貢献する可能性がある。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2023 2022 2021

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 2 results)

  • [Journal Article] Oleate Impacts on Acetoclastic and Hydrogenotrophic Methanogenesis under Mesophilic and Thermophilic Conditions2023

    • Author(s)
      Li X, Yang Y, Lu C-S, Kobayashi T, Kong Z, Hu Y.
    • Journal Title

      International Journal of Environmental Research and Public Health

      Volume: 20 Issue: 4 Pages: 3423-3423

    • DOI

      10.3390/ijerph20043423

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Performance Comparison of CSTR and CSFBR in Anaerobic Co-Digestion of Food Waste with Grease Trap Waste2022

    • Author(s)
      Hu Y, Ma H, Wu J, Kobayashi T, Xu K-Q.
    • Journal Title

      Energies

      Volume: 15 Issue: 23 Pages: 8929-8929

    • DOI

      10.3390/en15238929

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Biofilm formation enhancement in anaerobic treatment of high salinity wastewater: Effect of biochar/Fe addition2021

    • Author(s)
      Hu Y., Shi C., Ma H., Wu J., Kobayashi T., Xu K-Q.
    • Journal Title

      Journal of Environmental Chemical Engineering

      Volume: 9 Issue: 4 Pages: 105603-105603

    • DOI

      10.1016/j.jece.2021.105603

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 含油汚泥と厨芥のオンサイト混合メタン発酵がCO2排出量削減と廃棄物循環利用に及ぼす効果2021

    • Author(s)
      小林拓朗, 横尾祐輔, 倉持秀敏, 田崎智宏, 稲葉陸太, 河井紘輔
    • Journal Title

      用水と廃水

      Volume: 63(4) Pages: 298-305

    • Related Report
      2021 Research-status Report
    • Peer Reviewed

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Published: 2020-04-28   Modified: 2024-01-30  

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