REMOVAL OF TOXIC CONTENT FROM EFFLUENT USING ECO FRIENDLY TECHNIQUE

Abstract

Industrial plants generate increasing amounts of wastewater contaminated with toxic and hazardous organic compounds, which cause severe problems for the environment. These industrial wastewaters must be treated in order to meet the specifications for discharge or recycling in the process. Catalytic wet air oxidation (CWAO) removal of organic pollutants in the liquid phase via complete oxidation using an oxidizing agent gas such as oxygen or air in the presence of a catalyst has received considerable interest over the last three decades. Among the different investigated advanced oxidation methods, the highest degradation efficiencies were observed for catalytic wet air oxidation systems. Homogeneous catalysts have been synthesized and tested in the last decade, based either on metal oxides (Cu, Zn, Co, Fe, Mn and Bi) or supported noble metals. CWAO can be accomplished with temperature as low as 250 °C as compared to temperatures ranging from 600 to 1000 °C.