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

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04764
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 22060:Environmental systems for civil engineering-related
• Research Institution: National 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
• Keywords: オンサイトバイオマス利用 / 油脂 / メタン発酵

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.

Free Research Field

資源循環技術

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。