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Matgas Publications

Matgas Publications
  • article
  • Casado, J. and Fornaguera, J. and Galan, M. I.
  • Pilot scale mineralization of organic acids by electro-Fenton (R) process plus sunlight exposure
  • Water Research
  • 2006
  • 40
  • 2511--2516
  • 13
  • The viability of the electro-Fenton (R) degradation of aqueous solutions of benzoic acid, 2,4-dichlorophenoxyacetic acid and oxalic acid has been studied at 20 A using a pilot flow reactor containing an anode and an oxygen diffusion cathode, both of 100cm(2) section. Pollutants were preferentially oxidized by hydroxyl radicals formed in solution from reaction of Fe2+ with electrogenerated H2O2, allowing mineralization of benzoic acid and 2,4-D. For oxalic acid no electrochemical mineralization was observed. After electrolysis, samples of the different effluents were exposed to sunlight (Helielectro-Fenton process) and almost complete mineralization was reached after ca. 30-50min without additional cost. Effects of parameters such as electrolysis time, pH and solar irradiation time on the process efficiencies were studied. (c) 2006 Elsevier Ltd. All rights reserved.

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