Kinetic Analysis on As(III) Oxidation in a Fixed-Bed Flow Reactor Filled with a Supported Platinum Catalyst

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In this study, the oxidation of As(III) was examined in a fixed-bed flow reactor filled with a SiO_2-supported Pt catalyst, and the reaction kinetics were analyzed. The results of the experiments with different concentrations of As(III) at small W/F suggest that the reaction follows the Langmuir-Hinshelwood (L-H) mechanism. However, at large W/F, the kinetic equations different from the L-H equation were obtained because the O_2 supply to the catalyst surface was rate-limiting. It was also demonstrated using this reactor that As(III) of an equivalent concentration as the mine effluent was almost completely oxidized to As(V) with only dissolved O_2.

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詳細情報 詳細情報について

  • CRID
    1050580605009784320
  • NII書誌ID
    AA12022538
  • ISSN
    18811299
    00219592
  • HANDLE
    2324/7164801
  • 本文言語コード
    en
  • 資料種別
    journal article
  • データソース種別
    • IRDB
    • OpenAIRE

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