Electrolysis and Its Hybrid Methods Applied to Decomposition of Endocrine Disrupting Chemicals

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  • TAKAGAMI Naomi
    Department of Applied Physics and Chemistry, University of Electro-Communications
  • OHTSUKI Kazuhiro
    Department of Applied Physics and Chemistry, University of Electro-Communications
  • MAKI Shojiro
    Department of Applied Physics and Chemistry, University of Electro-Communications
  • NIWA Haruki
    Department of Applied Physics and Chemistry, University of Electro-Communications
  • HATANAKA Shin-ichi
    Department of Applied Physics and Chemistry, University of Electro-Communications
  • HAYASHI Shigeo
    Department of Applied Physics and Chemistry, University of Electro-Communications

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Abstract

Rate constants for decomposition reaction were measured for several phenols, i.e., bisphenol A, p-chlorophenol, p-octylphenol, 2,4-dichlorophenol, p-tert-butylphenol and for two other chemicals, benzophenone and PCB compounds in waste oil. The following methods were adopted: electrolysis, photolysis, sonolysis, photolytic electrolysis, and sonolytic electrolysis. The initial concentration was fixed at 50 mg/L except for the PCB, for which the concentration for all the isomers was 500 ng/L. The solvent was water, but for chemicals with insufficient solubility, mixtures with alcohols were used. Additional application of ultrasound led to remarkable enhancement for p-chlorophenol and 2,4-dichlorophenol. The electrolysis rate constant for PCB compounds was comparable to that for the phenols. Benzophenone was decomposed 10 times as slow as the phenols partly because of the solvent containing alcohols.

Journal

  • Electrochemistry

    Electrochemistry 74 (8), 599-602, 2006

    The Electrochemical Society of Japan

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