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Characterization of wastewater effluent derived toxic matters and development of real-time monitoring indicator

Research Project

Project/Area Number 20K14859
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 22060:Environmental systems for civil engineering-related
Research InstitutionKanazawa University

Principal Investigator

Hara-Yamamura Hiroe  金沢大学, 地球社会基盤学系, 助教 (70823524)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords下水由来フミン物質 / 未規制化学物質 / 細胞毒性試験 / トキシコゲノミクス / 蛍光分析 / 下水再利用 / 下水由来溶存有機物 / 複合毒性 / qPCR / QCM / EEM / 機械学習 / 細胞毒性 / 微量汚染物質 / 遺伝子発現解析 / インラインLC-EEM
Outline of Research at the Start

下水再利用における未規制化学物質の制御・監視は世界共通の課題である。本研究では,下水再利用システムの信頼性向上に現実的な解決策(制御・監視対象となる微量化学物質の優先づけ)を提供するため必要な知見を得ることを目的として(1)下水由来フミン物質の特性解析とヒト細胞への作用機構の解明,(2)下水由来毒性物質群の即時モニタリング指標の開発,を行う。
ヒト細胞の網羅的遺伝子発現解析に基づく高感度かつ包括的な毒性影響評価に基づき,毒性作用との関連する下水由来フミン物質の物理化学的特性と作用機構を明らかにする。また,蛍光特性に基づき,毒性作用の原因物質を簡便かつ迅速に検出可能な管理指標の開発を行う。

Outline of Final Research Achievements

Control and monitoring of unregulated chemicals in water reuse systems are common challenge in the world. In this study, we aimed to get insights into the prioritized chemicals for control and monitoring in the wastewater reclamation schemes, by 1) investigation of interaction between wastewater effluent organic matters (EfOM) and micropollutants, and 2) development of monitoring indicator for the toxic fraction of EfOM. The combination of transcriptomic analysis and adsorption assessment revealed that the basic fraction of EfOM was capable of mitigate or enhance the biological activity of steroid hormones. In addition, the multivariate analysis of fluorescence spectra data suggested the fluorescence matters with 20,000 Da or smaller size had a potential indicator for the toxic unknowns in the wastewater effluent.

Academic Significance and Societal Importance of the Research Achievements

下水処理水は,処理過程で生じる副生成物・代謝物,微生物由来の溶解性有機物,水道水由来の自然有機物等が織り成す複雑な処理水マトリクスを構成している.本研究の知見は,下水再利用システムにおいて制御・監視すべき微量汚染物質を絞り込むために有用である.また,対象物質が明らかになれば,これらに対し有効な高度処理技術の開発にも着手できる.一方で,処理水マトリクスには多くの自然由来有機物が含まれていることから,吸着特性データは,自然の水環境中での微量汚染物質の挙動や毒性影響を研究する上でも役立つ.

Report

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

    (4 results)

All 2022 2021

All Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] 機械学習を用いた3次元蛍光スペクトルデータに基づく『飲用水』の判別2022

    • Author(s)
      大谷恭平, 原宏江,池本良子,山村寛,本多了
    • Organizer
      第56回日本水環境学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Variational Autoencoder (VAE) for Characterization of Potable Water Quality Based on 3D Fluorescence Spectra2021

    • Author(s)
      Kyohei Otani, HIROE Hara-Yamamura, Ryo Honda
    • Organizer
      Water and Environment Technology Conference 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mixture effects of steroid hormones and dissolved effluent organic matters derived from wastewater on HepG2 cells2021

    • Author(s)
      Bhagya Kahatagahawatte, Hiroe Hara-Yamamura, Hiroshi Yamamura, Ryo Honda
    • Organizer
      International Conference "Challenges in Environmental Science and Engineering", CESE-2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 最新統計手法と伝統的分画手法の組み合わせによる下水由来毒性物質群の探索2021

    • Author(s)
      原宏江、Y.B.P.カハタガハワッタ、詹静雅、山口裕通、本多了、松浦哲久、池本良子、山村寛
    • Organizer
      第55回日本水環境学会年会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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