Development of limonite-biochar composite for the improvement of the anaerobic digestion of livestock manure and fertilizer quality of digestate

• Project/Area Number: 24K09153
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 41040:Agricultural environmental engineering and agricultural information engineering-related
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: ANDRIAMANOHIARISOAMANANA FETRA・JULES 国立研究開発法人農業・食品産業技術総合研究機構, 九州沖縄農業研究センター, 主任研究員 (30910377)
• Project Period (FY): 2024-04-01 – 2027-03-31
• Project Status: Granted (Fiscal Year 2024)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2026: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2025: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2024: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: Anaerobic digestion / Biochar / Digestate utilization / Nutrient recycling

Outline of Research at the Start

Biochar and limonite will be used to improve the anaerobic digestion of livestock manure. Through the combined effect of biochar (reduction of toxic substances) and limonite (promote direct interspecies electron transfer), a high-rate anaerobic digestion process will be established. Moreover, a good quality digestate will be produced with possible recovery of essential elements (N, P, K). The results of this research will allow the establishment of efficient anaerobic digestion in livestock farming through the reduction of biodigester size and the utilization of digestate in agriculture.