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Investigation on quorum sensing-based microbiological control of MBR fouling

Research Project

Project/Area Number 15K18143
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Civil and environmental engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Tobino Tomohiro  東京大学, 環境安全研究センター, 助教 (90624916)

Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords膜分離活性汚泥法 / ファウリング / クオラムセンシング / アシルホモセリンラクトン / フーリエ変換型質量分析装置 / 下廃水処理 / 廃水処理
Outline of Final Research Achievements

This study aimed at unraveling fundamental mechanisms of an innovative technology for MBR membrane fouling control that targets "quorum sensing" with which bacteria utilize signaling compounds to sense their cell density. Analytical method for quantification of signaling compounds acyl homoserine lactones (AHLs) has been developed, and AHL concentrations in MBR sludge were quantified to reveal the relationship to membrane fouling. AHLs were detected from MBR sludge samples under different conditions, indicating the involvement of quorum sensing system in the MBR sludge, whereas no clear relationship of detected AHL concentrations in the sludge supernatant to membrane fouling was found.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (2 results)

All 2016 2015

All Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Quantification of acyl homoserine lactones in MBR sludge using solid phase extraction and mass spectrometry2016

    • Author(s)
      D. Yagi, T. Tobino, F. Nakajima, K. Yamamoto
    • Organizer
      Water and Environment Technology Conference
    • Place of Presentation
      中央大学(東京都・文京区)
    • Year and Date
      2016-08-27
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of acyl-homoserine lactone concentrations in activated sludge on membrane fouling in membrane bioreactors2015

    • Author(s)
      S. Hirano, T. Tobino, F. Nakajima, K. Yamamoto
    • Organizer
      Water and Environment Technology Conference
    • Place of Presentation
      日本大学(東京都・千代田区)
    • Year and Date
      2015-08-05
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2018-03-22  

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