TOTAL ORGANIC-CARBON REDUCTION OF PHENOL-CONTAINING WASTEWATERS BY OXIDATION TECHNIQUES

The anodic oxidation and ozonation techniques for the reduction of Total Organic Carbon (TOC) in phenol-containing wastewater have been studied. The effects of applied current, initial phenol concentration, surface area of anode, and time of ozonation on the TOC removal have been investigated. The percentage TOC removal increased with increasing applied current, anode surface area, and as initial phenol concentration increased up to 800 mg.l-1 using anodic oxidation technique. The percentage of TOC removal also increased iwth increasing time of ozonation, initial phenol concentration, and decreased as the pH of the solution is increased. Values of up to 65% TOC removal have been achieved.