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      Characteristics of MnO2 catalytic ozonation of sulfosalicylic acid and propionic acid in water

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      Chemosphere
      Elsevier BV

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          Abstract

          The characteristics of different types of MnO(2) catalytic ozonation of sulfosalicylic acid (SSal) and propionic acid (PPA) have been investigated in this paper. The experimental results show the dependence of catalytic activity of MnO(2) on organic compounds and the pH of solutions, but it is independent on the type of MnO(2). For example, three types of MnO(2) have not any catalytic activity when ozonation of PPA under the condition of this experiment. All MnO(2) catalytic ozonation of SSal at pH=1.0 have a greater total organic carbon removal than ozonation alone has, however, at pH=6.8 and 8.5, catalytic efficiency is not observed. Furthermore, the batch experimental results indicate that there are no direct relationship between the activity of metal oxide catalytic decomposition of ozone and that of its catalytic degradation of organic compounds.

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          Author and article information

          Journal
          Chemosphere
          Chemosphere
          Elsevier BV
          00456535
          March 2003
          March 2003
          : 50
          : 10
          : 1359-1364
          Article
          10.1016/S0045-6535(02)00761-0
          12586167
          b8e80825-1ddb-4bc2-bf07-b0f6165e1c8b
          © 2003

          https://www.elsevier.com/tdm/userlicense/1.0/

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