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Creation of new recycling process of cellulosic dairy manure biomass and its application to the production of Japanese black beef.

Research Project

Project/Area Number 21K05842
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 41040:Agricultural environmental engineering and agricultural information engineering-related
Research InstitutionObihiro University of Agriculture and Veterinary Medicine

Principal Investigator

Umetsu Kazutaka  帯広畜産大学, 畜産学部, 教授 (20203581)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords畜産バイオマス / バイオプロセッシング / 再生可能エネルギー / 循環型社会 / 畜産廃棄物の利用 / 資源リサイクル / バイオプロセシング
Outline of Research at the Start

これまでに研究代表者らが開発に取り組んできた乾式メタン発酵技術を活用し,セルロース系乳牛糞尿からの高効率エネルギー回収手法の確立と発酵残渣を用いた新規再生敷料の開発を行う。さらに,これらの手法を家畜糞尿組成が類似している肉牛(黒毛和牛)糞尿に適用することにより,提案する乾式メタン発酵技術の水平展開の可能性を検証する。発酵残渣由来の再生敷料の有効性の実証は,セルロース系家畜糞尿に対して堆肥化以外の新たな資源循環プロセスの選択肢の実現につながり,得られる知見はつなぎ飼い酪農だけではなく,生産性向上が強く望まれている黒毛和牛(但馬牛)の持続可能な畜産経営に大きく寄与することが期待できる。

Outline of Final Research Achievements

Dairy cow manure from tie-stall barns on small-scale livestock farms contains a large amount of bedding material such as wheat straw, which has a low decomposition rate, and therefore the recovery rate of methane production in anaerobic digestion is low. Furthermore, there is concern that residue of pathogenic bacteria and antibiotic-resistant bacteria (ARB) when using the solid fraction of digestate as recycled bedding. In this research project, we carried out lab-scale dry anaerobic digestion of dairy cow manure, and isolated lignin-decomposing and cellulose-decomposing anaerobic bacteria from the digestate to improve the high decomposition rate of organic compound and increase of methane production. However, the isolates had low decomposition rate, and the efficiency of energy production was not improved, which remains an issue. On the other hand, the number of bacteria and ARB in the digestate was reduced, demonstrating the safety and effectiveness of recycled bedding.

Academic Significance and Societal Importance of the Research Achievements

セルロース系乳牛糞尿の乾式メタン発酵の特性を明らかにし,発酵残渣固形分の分離方法,分離後の乾燥方法と細菌残存数の関係を提示したことは,再生敷料の衛生管理手法を確立する上で重要な知見であるとともに,酪農生産者にとって敷料購入費の負担軽減につながり,家畜糞尿のバイオガス化の大きなインセンティブとなる。発酵残渣由来の再生敷料の有効性の実証は,セルロース系家畜糞尿に対して堆肥化以外の新たな資源循環プロセスの選択肢の実現につながり,得られた知見はつなぎ飼い酪農だけではなく,生産性向上が強く望まれる黒毛和牛(但馬牛)の持続可能な畜産経営に大きく寄与することが期待できる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2023 2022 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Book (1 results)

  • [Journal Article] Comparative effects of ferric hydroxide and (semi) conductive iron oxides on the anaerobic digestion of oxytetracycline-contaminated dairy manure2022

    • Author(s)
      Andriamanohiarisoamanana, FJ., Ihara, I., Yoshida, G., and Umetsu, K.
    • Journal Title

      Journal of Environmental Management

      Volume: 310 Pages: 114731-114731

    • DOI

      10.1016/j.jenvman.2022.114731

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Integration of biogas systems into a carbon zero and hydrogen economy: a review.2022

    • Author(s)
      Mohamed Farghali, Ahmed I. Osman, Kazutaka Umetsu, David W. Rooney
    • Journal Title

      Environmental Chemistry Letters

      Volume: 20 Issue: 5 Pages: 2853-2927

    • DOI

      10.1007/s10311-022-01468-z

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Integration of biogas technology into livestock farming: Study on farmers’ willingness to pay for biodigesters in Madagascar.2022

    • Author(s)
      Fetra Jules Andriamanohiarisoamanana, Tiana Navalona Randrianantoandro, Holy Farahanta Ranaivoarisoa, Hiroichi Kono, Gen Yoshida, Ikko Ihara, Kazutaka Umetsu
    • Journal Title

      Biomass and Bioenergy

      Volume: 164 Pages: 106557-106557

    • DOI

      10.1016/j.biombioe.2022.106557

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Thermophilic anaerobic digestion of Sargassum fulvellum macroalgae: Biomass valorization and biogas optimization under different pre-treatment conditions2021

    • Author(s)
      Farghali Mohamed、AP Yuhendra、Mohamed Israa M.A.、Iwasaki Masahiro、Tangtaweewipat Suchon、Ihara Ikko、Sakai Ryuichi、Umetsu Kazutaka
    • Journal Title

      Journal of Environmental Chemical Engineering

      Volume: 9 Issue: 6 Pages: 106405-106405

    • DOI

      10.1016/j.jece.2021.106405

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Book] 農業・食料生産分野におけるバイオマス利用工学―循環型社会のための生物資源利用―2023

    • Author(s)
      農業食料工学会生物資源部会編
    • Total Pages
      314
    • Publisher
      株式会社コロナ社
    • ISBN
      9784339066654
    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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