Abstract
Textile industries are however major consumers of water, dyes and other toxic chemicals. The effluents generated from each processing step comprise substantial quantities of unutilized resources. The effluents if discharged without prior treatment become potential sources of pollution due to their several deleterious effects on the environment. Photo catalysis is a rapidly expanding technology for wastewater treatment. In this review the chemical effects of various variables on the rate of degradation of different pollutants are discussed in detail. The effects of adsorption, temperature, intensity of light, pH, and the presence of anions, cations, etc. have been specifically covered. The photo catalytic degradation of dyes was studied using Nano titania–zirconia composite catalyst from textile wastewater. The textile effluent was characterized by various analytical procedures before treatment. The effects of initial pH of the solution, effluent concentration, catalyst concentration and air flow rate on the degradation of pollutants were investigated on the basis of chemical oxygen demand. Textile industry waste, Chemical oxygen demand, Photo degradation, Nano catalyst (Titanium di oxide, Zinc oxide etc.)
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