Oxidation of S(IV) to S(VI) under Fenton, photo-Fenton and γ-FeOOH photocatalized conditions

Anas Ansari, José Peral, Xavier Domènech, Rafael Rodríguez-Clemente, Juan Casado

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5 Citations (Scopus)

Abstract

Hydrogen sulphite oxidation to sulphate through three different routes was investigated. Fenton and photo-Fenton reactions were used to carry out the oxidation process. γ-FeOOH was also used in order to promote the photocatalytic oxidation of S(IV) species. In all three cases a kinetic model based on an autocatalytic reaction is suggested to account for the experimental results obtained. According to this model the intermediate species HSO5 and/or SO5·, generated during S(IV) oxidation, should be involved in the autocatalytic mechanism.
Original languageEnglish
Pages (from-to)269-276
JournalJournal of Molecular Catalysis A: Chemical
Volume112
Issue number2
DOIs
Publication statusPublished - 25 Oct 1996

Keywords

  • Fenton reactions
  • Iron
  • Oxidation
  • Peroxide
  • Photocatalysis
  • Sulphur

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