Degradation of Acid Orange 7 by electrochemically generated •OH radicals in acidic aqueous medium using a boron-doped diamond or platinum anode: A mechanistic study

A comparative study of the degradation of Acid Orange 7 aqueous solutions in acidic medium of pH 3.0 by electro-Fenton process using Pt or boron-doped diamond anode was reported

Samiha Hammami; Nizar Bellakhal; Nihal Oturan; Mehmet A. Oturan; Mohamed Dachraoui

2008

Scholarcy highlights

  • A comparative study of the degradation of Acid Orange 7 aqueous solutions in acidic medium of pH 3.0 by electro-Fenton process using Pt or boron-doped diamond anode was reported
  • The electro-Fenton degradation of AO 7 was followed by monitoring the formation and evolution of aromatic intermediates which are oxidized to aliphatic carboxylic acids before mineralization
  • The follow-up of the solution toxicity evolution shows the formation of intermediates more toxic than AO 7 and the connection between toxicity and aromaticity
  • A mineralization reaction pathway of Acid Orange 7 by electro-Fenton degradation involving all the intermediates identified was proposed

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