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Innovative mitigation technology of hydrogen sulfide in sewer pipe by combination of electricity producing bacteria and conductive concrete

Research Project

Project/Area Number 20K04749
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 InstitutionYamaguchi University

Principal Investigator

IMAI TSUYOSHI  山口大学, 大学院創成科学研究科, 教授 (20263791)

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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords発電菌 / 導電性コンクリート / 硫化水素 / 下水管 / 下水道の長寿命化 / 導電性材料 / メタゲノム解析 / Geobacter sp.
Outline of Research at the Start

本研究では「発電菌」の適切な制御と「導電性を付与したコンクリート下水管」との組み合わせにより、下水管内において硫化水素の発生抑制を実現できる革新的技術を開発することを目的とする。具体的には炭素粉や鉄粉(磁性粉)、鉄鋼スラグ等を混入して導電性を付与したコンクリート下水管内に電子の伝達経路を創出する。そして硫化水素を硫黄へ酸化する発電菌の集積培養方法並びに定着方法を確立することで適切に制御を行い、導電性を付与したコンクリート表面に発電菌を積極的に増殖・定着させる。この発電菌により汚泥堆積層内の硫化水素を酸化させることで、維持管理コストが低い全く新しい硫化水素の発生抑制技術の実現を目指すものである。

Outline of Final Research Achievements

The objective of this study was to develop a new technology to mitigate the concentration of hydrogen sulfide in sewer pipe by controlling electricity-producing bacteria (EPB) with using conductive concrete. Experimental results showed that the concentration of hydrogen sulfide significantly decreased by controlling EPB with using conductive concrete. Also found was that elemental sulfur was observed after experiment in sludge for conductive concrete, whereas this phenomenon was not observed for ordinary Portland cement. These results demonstrated that conductive concrete provides an electron pathway from deposited sludge in the bottom of sewer pipe to oxygen dissolved in surface water and as a result, the electron generated from hydrogen sulfide oxidation in anaerobic environment was accepted by oxygen via conductive concrete. Experimental results also showed that EPB could decrease the concentration of hydrogen sulfide, meaning hydrogen sulfide was biologically oxidized by EPB.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果として嫌気的な下水管の底層部にありながら水面近傍に存在する酸素を電子受容体として底層部の硫化水素を酸化・抑制できる発電菌による硫化水素の酸化メカニズムを解明し,また分子生物学的手法によりこの発電菌の主なものがGeobacter sp.であることを明らかにした本研究の学術的な意義は大きい.
現在管路施設の維持管理を行う上で大きな問題となっているのが下水管内で発生する硫化水素に起因する下水管の腐食である.本研究の成果により更新コストと維持管理コストを抑え、かつ硫化水素に対して高耐久かつ強靭性のある下水道施設が実現でき,もって持続可能な社会の実現に寄与できることが本研究の社会的意義である.

Report

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

    (17 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] Khon Kaen Univeristy(タイ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] MienTrung University of Civil Eng.(ベトナム)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] タクシン大学/コンケン大学(タイ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Thaksin University(タイ)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Enhancing the Biological Oxidation of H2S in a Sewer Pipe with Highly Conductive Concrete and Electricity-Producing Bacteria2023

    • Author(s)
      Vo Huy Thanh、Imai Tsuyoshi、Fukushima Masato、Promnuan Kanathip、Suzuki Tasuma、Sakuma Hiraku、Hitomi Takashi、Hung Yung-Tse
    • Journal Title

      International Journal of Environmental Research and Public Health

      Volume: 20 Issue: 2 Pages: 1459-1459

    • DOI

      10.3390/ijerph20021459

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Application of Conductive Concrete as a Microbial Fuel Cell to Control H2S Emission for Mitigating Sewer Corrosion2022

    • Author(s)
      Imai Tsuyoshi、Vo Huy Thanh、Fukushima Masato、Suzuki Tasuma、Sakuma Hiraku、Hitomi Takashi、Hung Yung-Tse
    • Journal Title

      Water

      Volume: 14 Issue: 21 Pages: 3454-3454

    • DOI

      10.3390/w14213454

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CONTROL OF HYDROGEN SULFIDE BY PROVIDING ELECTRON PASSWAY WITH HIGHLY CONDUCTIVE CONCRETE IN SEWER PIPE AND BACTERIAL FLORA ANALYSIS OF ELECTRICITY-PRODUCING BACTERIA2021

    • Author(s)
      IMAI Tsuyoshi、MAENO Junichi、FUKUSHIMA Masato、YASUI Misato、SUZUKI Tasuma、SAKUMA Hiraku、HITOMI Takashi
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 77 Issue: 7 Pages: III_111-III_120

    • DOI

      10.2208/jscejer.77.7_III_111

    • ISSN
      2185-6648
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 導電性コンクリートを用いた下水管路の腐食防止技術2021

    • Author(s)
      今井 剛, 福島 聖人, 鈴木 祐麻, 佐久間 啓, 人見 隆
    • Journal Title

      月刊下水道

      Volume: 44 Pages: 13-16

    • Related Report
      2021 Research-status Report
  • [Journal Article] Hydrogen sulfide reduction by conductive concrete with MFCs strain2020

    • Author(s)
      Fukushima M、Promunuan K、O-Thong S、Suzuki T、Imai T*
    • Journal Title

      IOP Conference Series: Materials Science and Engineering

      Volume: 965 Issue: 1 Pages: 012003-012003

    • DOI

      10.1088/1757-899x/965/1/012003

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] DEVELOPMENT OF HIGHLY CONDUCTIVE CONCRETE TO ENHANCE BIOLOGICAL OXDATION OF HYDROGEN SULFIDE IN SEWER PIPE2020

    • Author(s)
      FUKUSHIMA Masato、PROMNUAN Kanathip、YASUI Misato、SUZUKI Tasuma、IMAI Tsuyoshi*、SAKUMA Hiraku、HITOMI Takashi
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

      Volume: 76 Issue: 7 Pages: III_85-III_92

    • DOI

      10.2208/jscejer.76.7_III_85

    • NAID

      130007999671

    • ISSN
      2185-6648
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 下水管内における硫化水素の発生抑制を可能とする導電性コンクリートの開発2022

    • Author(s)
      今井 剛, 尾﨑 祐磨, 佐久間, 啓, 人見 隆
    • Organizer
      第22回環境技術学会年次大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 導電性コンクリートを用いた電子伝達経路の提供による下水管内における硫化水素の発生抑制と電子放出菌の菌叢解析2021

    • Author(s)
      今井 剛
    • Organizer
      環境工学研究フォーラム(土木学会環境工学委員会)
    • Related Report
      2021 Research-status Report
  • [Presentation] Research on the suppression effect of hydrogen sulfide by sewer pipes lined with conductive substances2021

    • Author(s)
      Yuma Osaki, Tsuyoshi Imai
    • Organizer
      The 18th Young Scientist Seminar, Yamaguchi University
    • Related Report
      2021 Research-status Report
  • [Presentation] DEVELOPMENT OF HIGHLY CONDUCTIVE CONCRETE TO ENHANCE BIOLOGICAL OXDATION OF HYDROGEN SULFIDE IN SEWER PIPE2020

    • Author(s)
      Fukushima M、Promunuan K、O-Thong S、Suzuki T、Imai T*
    • Organizer
      International Conference on Engineering and Industrial Technology (ICEIT2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 下水管内における硫化水素の生物学的酸化を 促進する高導電性コンクリートの開発2020

    • Author(s)
      福島聖人、Kanathip PROMNUAN、安井美智、鈴木祐麻、今井剛*、佐久間啓、人見隆
    • Organizer
      環境工学研究フォーラム(土木学会環境工学委員会)
    • Related Report
      2020 Research-status Report
  • [Remarks] 教員の研究紹介 山口大学工学部循環環境工学科

    • URL

      http://www.kankyo.yamaguchi-u.ac.jp/study/imai.html

    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] 硫酸腐食耐性コンクリート系管、コンクリート系管の硫酸腐食防止方法及び鉄筋の防食方法2020

    • Inventor(s)
      田中 修司、今井 剛、鈴木 祐麻、人見 隆、佐久間 啓
    • Industrial Property Rights Holder
      TNK水道コンサルタント、山口大学、中川ヒューム管工業
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Acquisition Date
      2022
    • Related Report
      2022 Annual Research Report

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

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