The synergetic positive catalytic effect of Cu 2 + on the electro-Fenton process is evidenced. OH formed in the medium and their degradation sequences are discussed from aromatic intermediates and finally short aliphatic acids are detected.

Initial pollutants react much more rapidly with The effect of the anode and cathode (carbon-felt or O 2-diffusion) on the degradation rate of persistent industrial by-products, herbicides, pharmaceuticals, dyes, etc. OH formed in the medium from Fenton’s reaction and at the anode surface from water oxidation are explained.The characteristics of different electro-Fenton systems where pollutants are simultaneously destroyed by An advantage of this technique is that Fe 2 + is continuously regenerated from cathodic reduction of Fe 3 +. The most usual method is electro-Fenton where Fe 2 + added to the wastewater reacts with electrogenerated H 2O 2 to yield H 2O 2 is generated from the two-electron reduction of O 2 at reticulated vitreous carbon, graphite, carbon-felt, and O 2-diffusion cathodes. OH) produced from anode and/or cathode reactions.These methods are electrochemical advanced oxidation processes that can be used in divided and undivided electrolytic cells in which pollutants are oxidized by hydroxyl radical ( Here, we describe the fundamentals, laboratory experiments, and environmental applications of indirect electrooxidation methods based on H 2O 2 electrogeneration such as electro-Fenton, photoelectro-Fenton and peroxicoagulation for the treatment of acidic wastewaters containing toxic and recalcitrant organics.

Anode cathode reaction cu fe