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Development of the treatment system for water polluted with organic chlorine compounds by using photocatalysis in the gas-phase

Research Project

Project/Area Number 09555269
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 工業物理化学
Research InstitutionYokohama National University

Principal Investigator

MURABAYASHI Masayuki  Yokohama National Univ., Inst. Environ. Sci. and Technol., Professor, 環境科学研究センター, 教授 (00010968)

Co-Investigator(Kenkyū-buntansha) ITOH Kimonori  Yokohama National Univ., Inst. Environ. Sci. and Technol., Professor, 環境科学研究センター, 教授 (40114376)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥8,300,000 (Direct Cost: ¥8,300,000)
Fiscal Year 1999: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1998: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1997: ¥3,700,000 (Direct Cost: ¥3,700,000)
Keywordsphotocatalyst / titanium dioxide / trichloroethylene / tetrachloroethylene / organic chlorine compound / aeration / ultraviolet / balcklight fluorescent lamp / グラスファイバークロス
Research Abstract

Pollution of groundwater and soils with organic chlorine compounds, such as trichloroethylene and tetrachloroethylene has been serious problems, A system for the treatment of such compounds using a combination of aeration and gas-phase photocatalysis was developed in the present study. Experiments for the fundamental study to elucidate reaction mechanisms, etc. and the practical study for the development of the actual system were carried out.
1. Results of the fundamental study by using a batch reactor are as follows ;
1) The photocatalytic degradation of trichloroethylene (or tetrachloroethylene) was accelerated, when a TiOィイD22ィエD2 photocatalyst was pre-illuminated with UV light before the reaction. This was supposed to be due to desorption of water molecules and hydroxyl groups from the surface of the TiOィイD22ィエD2 photocatalysts.
2) The second and third reactions were still accelerated, when the photocatalytic degradation reaction was repeated by using the same photocatalyst.
3) Phosgene and dichloroacetylchloride were detected as the (intermediate) products. The acceleration of the repeated reactions stated above was supposed to be due to the chain reaction initiated with such compounds.
4) The fundamental study on reaction mechanisms was thought to give useful information to minimize formation of harmful by-products in the continuous reactor of a pilot-plant scale.
2. Results of the practical study using a system of a pilot-plant are as follows ;
1) A pilot plant to treat organic chlorine compounds in the actual groundwater was constructed in success using the combination of aeration and photocatalysis. The groundwater polluted with tetrachloroethylene was well purified continuously.
2) No harmful compounds over the standard were detected in the gaseous exhaust.
3)The plant was operated continuously for five weeks. Practical data were obtained to show much possibility of the construction of actual larger plant.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] J. -S. Kim: "Pretreatment of the photocatalyst and the photocatalytic degradation of trichloroethylene in the gas-phase"Chemosphere. 38・13. 2969-2978 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Murabayashi: "Degredation of organic chlorine compounds in the gas-phase and liquid-phase"Journal of Advanced Oxidation, Technologies. 4. 71-75 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Murabayashi: "Photocatalytic degradation of trichloroethylene in liquid-phase and in gas-phase by using titanium dioxide with platinum deposition"Denki Kagaku. 66. 671-672 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] J. -S. Kim: "Photocatalytic degradation of trichloroethylene in gas-phase over TiO_2 sol-gel thin films ; Analysis of poducts"Chemosphere. 36・3. 483-495 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Yoshida: "Gas-phase photocatalytic degradation of tetrachloroethylene in water"J. Japan Soc. on Water Environ.. 21・10. 683-689 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 吉田克彦: "気相光触媒反応法によるテトラクロロエチレンの連続分解処理"水環境学会誌. 21・10. 683-689 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] J.-S. Kim, K. Itoh, M. Murabayashi, B.-A. Kim: "Pretreatment of the photocatalyst and the photocatalytic degradation of trichloroethlene in the gas-phase"Chemosphere. 38,13. 2969-2978 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Murabayashi, K. Itoh, K. Togashi, K. Shinozawa, H. Yamazaki: "Degradation of organic chlorine compounds in the gas-phase and liquid-phase"J. Advanced Oxidation Technol.. 4. 71-75 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Murabayashi, K. Itoh, K. Togashi: "Photocatalytic degradation of trichloroethylene in liquid-phase and in gas-phase and in gas-phase by using titanium dioxide with platinum deposition"Denki Kagaku. 66. 671-672 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] J.-S. Kim, K. Itoh, M. Murabayashi: "Photocatalytic degradation of trichloroethylene in the gas-phase over TiOィイD22ィエD2 sol-gel thin films ; Analysis of products"Chemoshere. 36, 3. 483-495 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Yoshida, K. Okamura, H. Tomioka, H. Yamazaki, K. Shinozawa, K. Itoh, M. Murabayashi: "Gas-phase photocatalytic degradation of tetrachloroethylene in water"J. Japan soc. on Water Environ.. 21, 10 (in Japanese). 683-689 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] J.-S. Kim, K. Itoh, M. Murabayashi: "Effects of humidity on the gas-phase photocatalytic degradation of trichloroethylene over the pretreated TiOィイD22ィエD2 thin films"Denki Kagaku. 65. 966-968 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] J.-S.Kim: "Pretreatment of the photocatalyst and the photocatalytic degradation of trichloroethylene in the gas-phase"Chemosphere. 38・13. 2969-2978 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Murabayashi: "Degradation of organic chlorine compounds in the gas-phase and liquid-phase"Journal of Advanced Oxidation, Technologies. 4. 71-75 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Murabayashi: "Photocatalytic degradation of trichloroethylene in liquid-phase and in gas-phase by using titanium dioxide with platinum deposition"Denki Kagaku. 66. 671-672 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] J.-S.Kim: "Photocatalytic degradation of trichloroethylene in the gas-phase over TiO_2 sol-gel thin films; Analysis of products"Chemosphere. 36・3. 483-495 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Yoshida: "Gas-phase photocatalytic degradation of tetrachloroethylene in water"J. Japan Soc. on Water Environ.. 21・10. 683-689 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] 吉田克彦: "気相光触媒反応法によるテトラクロロエチレンの連続分解処理"水環境学会誌. 21・10. 683-689 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] J.S.Kim,K.Itoh,M.Murabayashi: "Effect of Humidity on the Gas Phase Photocatalytic Degradation of Trichloroethylene over the Pretreated TiO_2 Thin Films" Denki Kagaku. 65・11. 966-968 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] J.S.Kim,K.Itoh,M.Murabayashi: "Photocatalytic Degradation of Trichloroethylene in Gas Phase over the TiO_2 Sol-Gel Films : Analysis of Products" CHEMOSPHERE. 36・3. 483-495 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Murabayashi,K.Itoh,K.Togashi: "Photocatalytic Degradation of Trichloroethylene in Liquid Phase and in Gas Phase by Using Titanium Dioxide with Platinum Deposition" Denki Kagaku. 66・6. 671-672 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.S.Muller,Z.Sun,Gireesh,M.P.,K.Itoh,M.Murabayashi: "The Combination of Photocatalysis and Ozonolysis as a New Approach for Cleaning 2,4-Dichlorophenoxyaceticacid Polluted Water" CHEMOSPHERE. 36 6. 2043-2055 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 吉田克彦,岡村和雄,伊藤公紀,村林眞行,: "水中トリクロロエチレンの光触媒分解 薄膜状 二酸化チタンのディップ回数による影響" Denki Kagaku. 66・2. 171-175 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 吉田克彦,岡村和雄,伊藤公紀,村林眞行ほか: "気相光触媒反応法によるテトラクロロエチレンの連続分解処理" 水環境学会誌. 21・10. 683-689 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] J.S.Kim, K.Itoh, M.Murabayashi,: "Effect of Humidity on the Gas Phase Photocatalytic Degradation of Trichloroethylene over the Pretreated TiO_2 Thin Films," Denki Kagaku. 65巻11号. 896-996 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] J.S.Kim, K.Itoh, M.Murabayashi.: "Photocatalytic Degradation of Trichloroethylene in Gas Phase over the TiO_2 Sol-Gel Films:Analysis of Products." CHEMOSPHERE. 36巻3号. 483-495 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Murabayashi, K.Itoh, K.Togashi,: "Photocatalytic Degradation of Trichloroethylene in Liquid Phase and in Gas Phase by Using Titanium Dioxide with Platinum Deposition," Denki Kagaku. 66巻6号(発表予定). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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