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

✍ Scribed by Anas Ansari; José Peral; Xavier Domènech; Rafael Rodríguez-Clemente; Juan Casado

• Book ID: 103997673
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 688 KB
• Volume: 112
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/1381-1169(96)00043-x

✦ Synopsis

Hydrogen sulphite oxidation to sulphate through three different routes was investigated. Fenton and photo-Fenton reactions were used to carry out the oxidation process. y-FeOOH was also used in order to promote the photocatalytic oxidation of S(W) 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 HSO; and/or SO;-, generated during S(N) oxidation, should be involved in the autocatalytic mechanism.