What Anode Material is Used for Organic Impurities Removal?

What Anode Material is Used for Organic Impurities Removal?

Removal of organic impurities in industrial wastewaters, especially those containing phenol and chlorophenols is very important for environmental protection. Electrooxidation of these impurities appears to be a promising process since no additional oxidative reagents should be used.

An appropriate anode material with good electrocatalytic activity for the oxidation organic compound is significant.

The oxidation of phenol and substituted phenols has been investigated on a variety of metal anodes, with special attention being given to Pt and  Pt–Sn alloy. Owing to the good activity for total organic carbon removal, the anodes based on conductive metal oxides, such as PbO2, SnO2, IrO2 and RuO2 appear to be more promising materials for use in the practical treatment of wastewaters containing organic impurities.Boron-doped diamond(BDD), glassy carbon and carbon felt and carbon black slurry electrodes are also been studied.

Dimensionally stable anodes (DSA), consisting of titanium-supported coatings of noble-metal oxides, seem to be very promising materials for this type of electrochemical reaction since they have a large electrochemically active surface area, especially those prepared by the sol-gel procedure, and high electrocatalytic activity for a number of electrochemical oxidation as well.