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Decomposition of Environmentally Persistent Perfluorinatied Acids by Use of Metal Complex Photocatalysis

Research Project

Project/Area Number 15310066
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental technology/Environmental materials
Research InstitutionNATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Principal Investigator

HORI Hisao  National Institute of Advanced Industrial Science and Technology, Research Institute for Environmental Management Technology, Group Leader, 環境管理技術研究部門・未規制物質研究グループ・研究員グループ長 (50357951)

Co-Investigator(Kenkyū-buntansha) EINAGA Hisahiro  National Institute of Advanced Industrial Science and Technology, Research Institute for Environmental Management Technology, Researcher, 環境管理技術研究部門・励起化学研究グループ, 研究員 (90356593)
指宿 堯嗣  独立行政法人産業技術総合研究所, 環境管理研究部門, 部門長 (00356510)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥11,600,000 (Direct Cost: ¥11,600,000)
Fiscal Year 2004: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2003: ¥7,800,000 (Direct Cost: ¥7,800,000)
KeywordsPersistent / Fluorine / Perfluorocarboxylic acid / Perfluorooctanoic acid / PFOA / Photocatalyst / Heteropolyacid / Persulfate / パーフルオロ酸 / 分解 / 界面活性剤
Research Abstract

The decomposition of environmentally persistent perfluorocarboxylic acids (PFCAs, typically perfluorooctanoic acid ; PFOA) in water by UV-visible light irradiation, by H_2O_2 with UV-visible light irradiation, by a tungstic heteropolyacid (polyoxometalate) photocatalyst, and by persulfate was examined. In the case of long-chain PFCAs such as PFOA, direct photolysis proceeded slowly to produce CO_2, F^- ions and short-chain PFCAs. Compared to the direct photolysis, H_2O_2 was less effective in PFCA decomposition. On the other hand, the heteropolyacid photocatalyst led to efficient PFCA decomposition and the production of F^- ions and CO_2. The photocatalyst also suppressed the accumulation of short-chain PFCAs in the reaction solution. PFOA in the concentrations of 1.35 mM was completely decomposed by the catalyst within 24 h of irradiation from a 200-W xenon-mercury lamp, with no accompanying catalyst degradation. Gas chromatography/mass spectrometry (GC/MS) measurements showed no trace of environmentally undesirable species such as CF_4, which has a very high global-warming potential. When persulfate was used as a photochemical oxidant, the PFCA decomposition proceeded more rapidly. PFOA at a concentration of 1.35 mM was completely decomposed by a photochemical system using 50 mM S_2O_8^<2-> and 4 h of irradiation and the initial PFOA decomposition rate was 11 times higher than with photolysis alone.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (12 results)

All 2005 2004 2003 Other

All Journal Article (10 results) Publications (2 results)

  • [Journal Article] Efficient decomposition of environmentally persistent perfluorocarboxylic acids by use of persulfate as a photochemical oxidant2005

    • Author(s)
      堀 久男
    • Journal Title

      Environmental Science & Technology 39

      Pages: 2383-2388

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Efficient decomposition of environmentally persistent perfluorocarboxylic acids using persulfate as a photochemical oxidant2005

    • Author(s)
      H.Hori, A.Yamamoto, E.Hayakawa, S.Taniyasu, N.Yamashita, S.Kustsuna, H.Kitagawa, R.Arakawa
    • Journal Title

      Environmental Science & Technology 39

      Pages: 2383-2388

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Decomposition of nonafluoropentanoic acid by heteropolyacid photocatalyst H_3PW_<12>O_<40> in aqueous solution2004

    • Author(s)
      堀 久男
    • Journal Title

      Journal of Molecular Catalysis A : Chemical 211

      Pages: 35-41

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Decomposition of environmentally persistent perfluorooctanoic acid in water by photochemical approaches2004

    • Author(s)
      堀 久男
    • Journal Title

      Environmental Science & Technology 38

      Pages: 6118-6124

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] High-performance liquid chromatography with conductimetric detection of perfluorocarboxylic acids and perfluorosulfonates2004

    • Author(s)
      堀 久男
    • Journal Title

      Chemosphere 57

      Pages: 273-282

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Decomposition of nonafluoropentanoic acid by heteropolyacid photocatalyst H_3PW_<12>O_<40> in aqueous solution2004

    • Author(s)
      H.Hori, E.Hayakawa, K.Koike, H.Einaga, T.Ibusuki
    • Journal Title

      Journal of Molecular Catalysis A : Chemistry 211

      Pages: 35-41

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Decomposition of environmentally persistent perfluorooctanoic acid in water by photochemical approaches2004

    • Author(s)
      H.Hori, E.Hayakawa, H.Einaga, S.Kutsuna, K.Koike, T.Ibusuki, H.Kitagawa, R.Arakawa
    • Journal Title

      Environmental Science & Technology 38

      Pages: 6118-6124

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] High-performance liquid chromatography with conductimetric detection of perfluorocarboxylic acids and perfluorosulfonates2004

    • Author(s)
      H.Hori, E.Hayakawa, N.Yamashita, S.Taniyasu, F.Nakata, Y.Kobayashi
    • Journal Title

      Chemosphere 57

      Pages: 273-282

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Photochemical decomposition of pentafluoropropionic acid to fluorideions with a water-soluble heteropolyacid photocatalyst2003

    • Author(s)
      堀 久男
    • Journal Title

      Applied Catalysis B : Environmental 46

      Pages: 333-340

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Photochemical decomposition of pentafluoropropionic acid to fluoride ions with a water-soluble heteropolyacid photocatalyst2003

    • Author(s)
      H.Hori, Y.Takano, K.Koike, S.Kutsuna, H.Einaga, T.Ibusuki
    • Journal Title

      Applied Catalysis B : Environmental 46

      Pages: 333-340

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] 堀 久男: "Photochemical decomposition of pentafluoropropionic acid to fluoride ions with a water-soluble heteropolyacid photocatalyst"Applied Catalysis B : Environmental. 46. 333-340 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 堀 久男: "Decomposition of nonafluoropentanoic acid by heteropolyacid photocatalyst H_3PW_<12>O_<40> in aqueous solution"Journal of Molecular Catalysis A : Chemical. 211. 35-41 (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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