Photoelectrochemical discoloration and degradation of organic pollutants in aqueous solutions.

PHOTOELECTROCHEMICAL DISCOLORATION AND DEGRADATION OF ORGANIC POLLUTANTS IN AQUEOUS SOLUTIONS. Organic compounds responsible for the color of wastewaters are usually refractory to biological digestion. In this paper the photo-assisted electrolysis process is used for color removal from three of the most colored wastewaters, which are daily generated in large amounts: the E I bleach Kraft mill effluent, a textile reactive dye effluent and a landfill leachate. Electrolysis was carried out at 26,5 mA cm(-2) in a flow reactor in which the anode surface was illuminated by a 400 W high pressure Hg bulb, In all experiments 70-75% of color reduction was observed which was also followed by a net organic load oxidation.25347748