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Development of new photochemical reaction model for predicting water quality transformation efficiency

Research Project

Project/Area Number 21H01462
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22060:Environmental systems for civil engineering-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Yoshimura Chihiro  東京工業大学, 環境・社会理工学院, 教授 (10402091)

Co-Investigator(Kenkyū-buntansha) 佐野 大輔  東北大学, 工学研究科, 教授 (80550368)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2021: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Keywords光化学反応 / ラジカル / 溶存有機物 / 光学特性 / 微量有機汚染物質 / モデル化 / 水環境 / 水処理 / 病原ウイルス
Outline of Research at the Start

水環境中では難分解性物質の蓄積が進み、また病原ウイルスや薬剤耐性病原菌などの微生物の拡散により、水利用や生態系への影響が懸念されている。そこで、本研究では難分解性物質および病原微生物を対象として、水質変換効率を予測するための新規光化学反応モデルを構築する。そのために、標準的な水質マトリックスおよび環境水・二次処理水を用いた光化学実験を実施して、光化学反応論によるラジカル生成モデルの精度を高める。そして、各種ラジカルと有機化合物・病原微生物の反応を記述する構造方程式モデリングや機械学習のモデル化手法を組み合わせることで、水環境や水利用で有効となる光化学反応モデルを構築する。

Outline of Final Research Achievements

Indirect photolysis via radicals is poorly understood for water quality control in aquatic environments. The objective of this study was to develop a photochemical reaction model to predict the quantum yield of radical photoproduction by focusing on the photochemical properties of dissolved organic matter. It allows us to describe and predict the conversion efficiency of persistent substances and pathogenic microorganisms in water. Chemical analyses and photochemical experiments were conducted for surface waters collected from dam reservoirs, lakes, and coastal areas throughout Japan to model the quantum yields of excited triplet dissolved organic matter and singlet oxygen. The results showed that they can be accurately estimated based on their optical properties, and novel photochemical reaction models were developed for accurate estimation of photodegradation in various water environments.

Academic Significance and Societal Importance of the Research Achievements

水環境に蓄積する難分解性物質については光化学反応が水環境中の主な分解プロセスであると言われている。そこで、水中の難分解性物質や病原微生物に対する変換効率を予測するために、溶存有機物の光特性に着目して、ラジカルの光生成の量子収率を予測する光化学反応モデルを構築した。その結果、量子収率は光学特性に基づき精度良く推測できることが示され、多様な水環境における光分解を精度良く推定できる新規光化学反応モデルが構築された。これにより、水環境中の難分解性物質や病原微生物の定量的な管理、そして、水処理過程におけるそれらの分解効率の予測のための基盤となる知見を得た。

Report

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

    (35 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (15 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 12 results,  Open Access: 6 results) Presentation (17 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] 華北電力大学(中国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Photochemical fate of β-blocker pindolol in riverine and its downstream coastal waters2024

    • Author(s)
      Wang Jieqiong、Guo Zhongyu、Guo Yuchen、Zhang Yingqi、Yu Pengfei、Ye Zimi、Qian Yao、Yoshimura Chihiro、Wang Tingting、Zhang Lilan
    • Journal Title

      Science of The Total Environment

      Volume: 927 Pages: 172236-172236

    • DOI

      10.1016/j.scitotenv.2024.172236

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photo-production of excited triplet-state of dissolved organic matters in inland freshwater and coastal seawater2024

    • Author(s)
      Guo Zhongyu、Wang Tingting、Ichiyanagi Hidetaka、Ateia Mohamed、Chen Guo、Wang Jieqiong、Fujii Manabu、En Kaichii、Li Tiansheng、Sohrin Rumi、Yoshimura Chihiro
    • Journal Title

      Water Research

      Volume: 253 Pages: 121260-121260

    • DOI

      10.1016/j.watres.2024.121260

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photodegradation of biodegradable plastics in aquatic environments: Current understanding and challenges2024

    • Author(s)
      Kaing Vinhteang、Guo Zhongyu、Sok Ty、Kodikara Dilini、Breider Florian、Yoshimura Chihiro
    • Journal Title

      Science of The Total Environment

      Volume: 911 Pages: 168539-168539

    • DOI

      10.1016/j.scitotenv.2023.168539

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Effect of Benzophenone Type UV Filters on Photodegradation of Co-existing Sulfamethoxazole in Water2023

    • Author(s)
      Kodikara Dilini、Guo Zhongyu、Yoshimura Chihiro
    • Journal Title

      Photochem

      Volume: 3 Issue: 2 Pages: 288-300

    • DOI

      10.3390/photochem3020017

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Apparent quantum yield for photo-production of singlet oxygen in reservoirs and its relation to the water matrix2023

    • Author(s)
      Guo Zhongyu、Wang Tingting、Chen Guo、Wang Jieqiong、Fujii Manabu、Yoshimura Chihiro
    • Journal Title

      Water Research

      Volume: 244 Pages: 120456-120456

    • DOI

      10.1016/j.watres.2023.120456

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Decay rate estimation of respiratory viruses in aerosols and on surfaces under different environmental conditions2023

    • Author(s)
      Bandara Sewwandi、Oishi Wakana、Kadoya Syun-suke、Sano Daisuke
    • Journal Title

      International Journal of Hygiene and Environmental Health

      Volume: 251 Pages: 114187-114187

    • DOI

      10.1016/j.ijheh.2023.114187

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Photodegradation of organic micropollutants in aquatic environment: Importance, factors and processes2023

    • Author(s)
      Guo Zhongyu、Kodikara Dilini、Albi Luthfia Shofi、Hatano Yuta、Chen Guo、Yoshimura Chihiro、Wang Jieqiong
    • Journal Title

      Water Research

      Volume: 231 Pages: 118236-118236

    • DOI

      10.1016/j.watres.2022.118236

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Potential effect of atmospheric condition on incident light and photo-production of reactive intermediates in freshwater systems2023

    • Author(s)
      Albi Luthfia Shofi、Guo Zhongyu、Chen Guo、Yoshimura Chihiro
    • Journal Title

      Environmental Advances

      Volume: 11 Pages: 100346-100346

    • DOI

      10.1016/j.envadv.2023.100346

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Integration of Photodegradation Process of Organic Micropollutants to a Vertically One-Dimensional Lake Model2023

    • Author(s)
      Chen Guo、Guo Zhongyu、Yoshimura Chihiro
    • Journal Title

      Sustainability

      Volume: 15 Issue: 3 Pages: 2082-2082

    • DOI

      10.3390/su15032082

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Disinfection efficacy and mechanism of olanexidine gluconate against noroviruses2022

    • Author(s)
      Kaoru Imai, Makoto Tanaka, Seiji Miyoshi, Ren Murakami, Akifumi Hagi, Sachi Yamagawa, Daisuke Sano
    • Journal Title

      American Journal of Infection Control

      Volume: accepted Issue: 7 Pages: 764-771

    • DOI

      10.1016/j.ajic.2021.11.020

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Photodegradation of acebutolol in natural waters: Important roles of carbonate radical and hydroxyl radical2022

    • Author(s)
      Ye Zimi、Guo Zhongyu、Wang Jieqiong、Zhang Lilan、Guo Yuchen、Yoshimura Chihiro、Niu Junfeng
    • Journal Title

      Chemosphere

      Volume: 287 Pages: 132318-132318

    • DOI

      10.1016/j.chemosphere.2021.132318

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Photodegradation of propranolol in surface waters: An important role of carbonate radical and enhancing toxicity phenomenon2022

    • Author(s)
      Guo Yuchen、Guo Zhongyu、Zhang Lilan、Yoshimura Chihiro、Ye Zimi、Yu Pengfei、Qian Yao、Hatano Yuta、Wang Jieqiong、Niu Junfeng
    • Journal Title

      Chemosphere

      Volume: 297 Pages: 134106-134106

    • DOI

      10.1016/j.chemosphere.2022.134106

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hierarchical Bayesian modeling for predictive environmental microbiology toward a safe use of human excreta: Systematic review and meta-analysis2021

    • Author(s)
      Oishi Wakana、Kadoya Syun-suke、Nishimura Osamu、B. Rose Joan、Sano Daisuke
    • Journal Title

      Journal of Environmental Management

      Volume: 284 Pages: 112088-112088

    • DOI

      10.1016/j.jenvman.2021.112088

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Predictive water virology using regularized regression analyses for projecting virus inactivation efficiency in ozone disinfection2021

    • Author(s)
      Kadoya Syun-suke、Nishimura Osamu、Kato Hiroyuki、Sano Daisuke
    • Journal Title

      Water Research X

      Volume: 11 Pages: 100093-100093

    • DOI

      10.1016/j.wroa.2021.100093

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Virus Disinfection and Population Genetics: Toward the Control of Waterborne Virus Diseases by Water Engineering2021

    • Author(s)
      Kadoya Syun-suke、Katayama Hiroyuki、Sano Daisuke
    • Journal Title

      Current Pollution Reports

      Volume: 7 Issue: 3 Pages: 407-416

    • DOI

      10.1007/s40726-021-00189-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] エンベロープウイルス集団の消毒感受性に関する研究2024

    • Author(s)
      小山寛貴、大石若菜、佐野大輔
    • Organizer
      第58回日本水環境学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Apparent Quantum Yield for Photo-Production of Singlet Oxygen in Reservoirs and Its Relation to Water Matrix2023

    • Author(s)
      Zhongyu Guo, Chihiro Yoshimura
    • Organizer
      The ACS Fall 2023-Radiation Chemistry
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quantum yield of photo-induced radical formation in dam reservoirs of Japan2023

    • Author(s)
      Chihiro Yoshimura, Zhongyu Guo
    • Organizer
      The 2nd International Conference and Scientific Meeting of the Indonesian Limnology Society (SMILS II) in conjunction with The 4th International Conference on Tropical Limnology (TROPLIMNO IV)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Photoproduction of reactive oxygen species from biodegradable plastics in aquatic environment2023

    • Author(s)
      Kaing, Chihiro Yoshimura
    • Organizer
      第七回環境水質工学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Improvement of the efficiency of photolysis treatment of organic pollutants by focusing on photon flux density2023

    • Author(s)
      Ririka Shibayama, Zhongyu Guo, Chihiro Yoshimura
    • Organizer
      第七回環境水質工学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Effect of photoproduced radicals on Escherichia coli and coliphage in water under the presence of fulvic acid2023

    • Author(s)
      Laura Valentina Machicado Quiroga, Yuta Hatano, Daisuke SANO, Chihiro Yoshimura
    • Organizer
      第七回環境水質工学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Effect of benzophenone type UV filters on photodegradation of co-existing sulfamethoxazole in water2023

    • Author(s)
      Dilini Chathurangi Kodikara, Zhongyu Guo, Chihiro Yoshimura
    • Organizer
      第七回環境水質工学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Apparent Quantum Yield for Photo-Production of Singlet Oxygen in Reservoirs and Its Relation to the Water Matrix2023

    • Author(s)
      Zhongyu Guo, Chihiro Yoshimura
    • Organizer
      第七回環境水質工学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Photodegradation of organic micropollutants under the influence of phytoplankton2023

    • Author(s)
      Guo Chen, Zhongyu Guo, Chihiro Yoshimura
    • Organizer
      第七回環境水質工学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] ダム湖における光化学反応とそのモデル化2022

    • Author(s)
      吉村千洋, Guo Zhongyu, Chen Guo
    • Organizer
      ELR2022つくば
    • Related Report
      2022 Annual Research Report
  • [Presentation] Modeling quantum yield for photo-production of reactive intermediates in reservoirs in Japan2022

    • Author(s)
      Guo Z, Yoshimura C
    • Organizer
      日本腐植物質学会第38回講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Regularized regression analysis for the prediction of enterovirus inactivation efficiency in wastewater by chlorine disinfection2022

    • Author(s)
      Atsuhiro Ishii, Syun-suke Kadoya, Daisuke Sano
    • Organizer
      IWA World Water Congress & Exhibition 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Regularized regression modeling of rotavirus disinfection in wastewater for predictive environmental microbiology in sanitation safety planning2022

    • Author(s)
      Atsuhito Ishii, Syun-suke Kadoya, Daisuke Sano
    • Organizer
      Water Convention 2022 at Singapore Internatinal Water Week
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 下水処理放流水の衛生学的安全管理のための環境予測微生物学的アプローチによるウイルス塩素消毒モデリング2022

    • Author(s)
      石井敦大、大石若菜、門屋俊祐、佐野大輔
    • Organizer
      第59回環境工学研究フォーラム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 環境光化学:水環境における反応・重要性・課題2021

    • Author(s)
      吉村千洋
    • Organizer
      日本水環境学会第24回シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Photochemistry of dissolved organic matter extracted from coastal seawater: excited triplet-states and contents of phenolic moieties2021

    • Author(s)
      Guo Z, Yoshimura C, Chen J.-W.
    • Organizer
      日本水環境学会第24回シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 正則化回帰アルゴリズムを用いた下水処理水中ウイルスの塩素消毒モデル構築に関する研究2021

    • Author(s)
      石井敦大、門屋俊祐、佐野大輔
    • Organizer
      第 58回環境工学研究フォーラム
    • Related Report
      2021 Annual Research Report
  • [Remarks] 吉村研究室ホームページ

    • URL

      https://sites.google.com/site/waterenvironmentlab/home

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
  • [Remarks] 河川や湖沼の水環境を保全~生態系を組み込む環境管理を研究~ ―吉村千洋

    • URL

      https://www.titech.ac.jp/public-relations/research/stories/faces43-yoshimura

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report

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

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