Sonoelectro-Fenton process: A novel hybrid technique for the destruction of organic pollutants in water

We present the results obtained by applying a novel hybrid advanced oxidation technique, which we have called sonoelectro-Fenton process, for the degradation of organic pollutants in aqueous medium

Mehmet A. Oturan; Ignasi Sirés; Nihal Oturan; Stéphanie Pérocheau; Jean-Luc Laborde; Stéphane Trévin

2008

Scholarcy highlights

  • We present the results obtained by applying a novel hybrid advanced oxidation technique, which we have called sonoelectro-Fenton process, for the degradation of organic pollutants in aqueous medium
  • Its high performance arises from the coupling between ultrasound irradiation and the in situ electrogeneration of Fenton’s reagent
  • A pseudo-first order kinetics is found in all cases
  • Similar results are reached for sono-EF at low and high frequency, but the lowest ultrasounds power is shown to be much better
  • We conclude that the improvement yielded by sono-EF is due to various contributions, which in order of relevance are: the enhanced mass transfer rate of both reactants towards the cathode for the electrochemical generation of Fenton’s reagent and its transfer into the solution in order to enhance Fenton’s reaction kinetics increasing the OH production rate and accelerating the destruction process, the additional generation of OH by sonolysis, and pyrolysis of organics due to cavitation generated by ultrasound irradiation

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