The viability of the electro-Fenton ® 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 100 cm 2 section. Pollutants were preferentially oxidized by hydroxyl radicals formed in solution from reaction of Fe 2+ with electrogenerated H 2 O 2 , 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. 30-50 min without additional cost. Effects of parameters such as electrolysis time, pH and solar irradiation time on the process efficiencies were studied. © 2006 Elsevier Ltd. All rights reserved.
- Electrochemical mineralization
- Organic acids
- Pilot reactor
- Wastewater treatment
Casado, J., Fornaguera, J., & Galán, M. I. (2006). Pilot scale mineralization of organic acids by electro-Fenton ® process plus sunlight exposure. Water Research, 40(13), 2511-2516. https://doi.org/10.1016/j.watres.2006.04.047