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Biochemical approach to clarify the mechanism of generation of compost fermentation heat

Research Project

Project/Area Number 16K21607
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Agricultural environmental engineering/Agricultural information engineering
Thermal engineering
Research InstitutionNational Agriculture and Food Research Organization

Principal Investigator

KOJIMA Yoichiro  国立研究開発法人農業・食品産業技術総合研究機構, 中央農業研究センター, 主任研究員 (80577916)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords堆肥 / 発酵熱 / 酸化還元状態 / 伝熱 / 堆肥発酵熱 / 有機性廃棄物 / 熱解析 / 堆肥化モデル / 伝熱係数 / 酸化還元電位 / 再生可能エネルギー / 堆肥化 / バイオマス
Outline of Final Research Achievements

In this project, the following research was done to clarify the heat generation mechanism from the observation of the biochemical changes in the compost material at the initial stage of composting where the organic matter is oxidized and decomposed by the action of the microorganism and generated fermentation heat. Specifically, 1) comprehending the redox state of raw composting materials in the heat generation period, to estimate the degree of decomposition of organic matter at the early stage of composting, and 2) construction of movement and extraction model of fermentation heat for generation of fermentation heat and movement by aeration, and the heat transfer coefficient between the compost material and air was calculated.

Academic Significance and Societal Importance of the Research Achievements

我が国において,年間7900万t発生している家畜ふん尿の大部分は堆肥化により処理されており,堆肥化時に発生し,利用されることなく環境中に放出されている発酵熱量は膨大である。本研究では,この発酵熱を有効利用するためのボトルネックである熱の発生及び移動・抽出過程において,学術的に新たな知見を提供したものである。本研究の成果は,今後の堆肥発酵熱の利活用技術の開発だけではなく,堆肥化過程の制御等にも活用可能である。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results) (of which Invited: 2 results)

  • [Journal Article] Binary power generation using composting fermentation heat as heat source2017

    • Author(s)
      Y. Kojima, Y. Iitaka, Y. Nishi, M. Nakanishi, K. Aamaha, Y. Abe, S. Endo
    • Journal Title

      農業施設

      Volume: 48(4) Pages: 225-233

    • NAID

      40021427447

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 畜産でエネルギーを回収する2019

    • Author(s)
      小島陽一郎
    • Organizer
      農業施設学会出前セミナー「農学と工学~未来像とキャリアパス」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 堆肥発酵熱の回収と利用2018

    • Author(s)
      小島陽一郎
    • Organizer
      平成30年度九州沖縄農業試験研究推進会議 畜産・草地推進部会 畜産環境研究会
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2016-04-21   Modified: 2020-03-30  

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