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Development of a photo-electrochemical advanced oxidation process using halide ions in wastewater

Research Project

Project/Area Number 26340064
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Environmental engineering and reduction of environmental burden
Research InstitutionRyukoku University

Principal Investigator

Kishimoto Naoyuki  龍谷大学, 理工学部, 教授 (00293895)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords促進酸化処理 / 水酸基ラジカル / 次亜塩素酸 / 電解処理 / 紫外線処理 / pH制御 / 化学酸化処理 / 光化学反応 / 紫外線 / 電解促進酸化 / 光化学反応器 / 次亜ハロゲン酸 / 1,4-ジオキサン
Outline of Final Research Achievements

An UV/electro-chlorine process using chloride ions in wastewater was developed as a new advanced oxidation process in this study. Hydroxyl radicals and chlorine radicals are produced via a photo-degradation of electrochemically generated hypochlorous acids in this process. The chlorine radicals can reproduce hypochlorous acids, which take part in the OH radical production again. A pH control system without reagent addition was also developed and applied to the UV/electro-chlorine process. As a result, the energy efficiency for organic contaminants removal with pH control was about 1.5 times higher than that without pH control. Moreover, hazardous byproducts formation like chloric acid was significantly restrained. Consequently, the UV/electro-chlorine process was thought to be technically feasible as an easily operable advanced oxidation process.

Report

(5 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Products Report
  • Research Products

    (7 results)

All 2019 2017 2016 2015 2014

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Acknowledgement Compliant: 2 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] State of the Art of UV/Chlorine Advanced Oxidation Processes: Their Mechanism, Byproducts Formation, Process Variation, and Applications2019

    • Author(s)
      Naoyuki Kishimoto
    • Journal Title

      Journal of Water and Environment Technology

      Volume: 17 Issue: 5 Pages: 302-335

    • DOI

      10.2965/jwet.19-021

    • NAID

      130007726308

    • ISSN
      1348-2165
    • Related Report
      Products Report
    • Peer Reviewed / Open Access
  • [Journal Article] Efficacy of vacuum ultraviolet photolysis for bromate and chlorate removal2015

    • Author(s)
      Naoyuki KISHIMOTO, Yumeko YAMAMOTO, Syou NISHIMURA
    • Journal Title

      Water Science and Technology: Water Supply

      Volume: 15 Issue: 4 Pages: 810-816

    • DOI

      10.2166/ws.2015.039

    • Related Report
      2015 Research-status Report 2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effect of pH and molar ratio of pollutant to oxidant on a photochemical advanced oxidation process using hypochlorite2015

    • Author(s)
      Naoyuki KISHIMOTO, Hideya NISHIMURA
    • Journal Title

      Environmental Technology

      Volume: 36 Issue: 19 Pages: 2436-2442

    • DOI

      10.1080/09593330.2015.1034187

    • Related Report
      2015 Research-status Report 2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 電解次亜光酸化法における薬剤不要のpH制御手法の開発2017

    • Author(s)
      片山優朋, 岸本直之, 加藤昌明, 大津秀緒
    • Organizer
      第51回日本水環境学会年会
    • Place of Presentation
      熊本大学黒髪南キャンパス
    • Year and Date
      2017-03-15
    • Related Report
      2016 Annual Research Report
  • [Presentation] 電解次亜光酸化法における副生成物生成に及ぼすpHの影響2016

    • Author(s)
      片山優朋,岸本直之
    • Organizer
      第50回日本水環境学会年会
    • Place of Presentation
      アスティとくしま
    • Year and Date
      2016-03-16
    • Related Report
      2015 Research-status Report
  • [Presentation] Influence of the initial pH on a photo-electrochemical advanced oxidation process using photolysis of electrochemically generated hypochlorous acid2015

    • Author(s)
      Yuho KATAYAMA, Naoyuki KISHIMOTO
    • Organizer
      Water and Environment Technology Conference 2015
    • Place of Presentation
      日本大学
    • Year and Date
      2015-08-05
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 電解フローセルによる臭素酸・塩素酸の電解還元特性2014

    • Author(s)
      岸本直之,南部沙緒莉
    • Organizer
      第17回日本水環境学会シンポジウム
    • Place of Presentation
      滋賀県立大学
    • Year and Date
      2014-09-08 – 2014-09-10
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2020-07-03  

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