OXIDATION AND MINERALIZATION OF ORGANIC MATTER USING ADVANCED OXIDATION PROCESS

Abstract

Textile industry is a water intensive chemical industry and is responsible for generating very high quantities of waste water which contains Dyes (particularly Azo Dyes),fatty acids, Phenols and derivatives as major pollutants. Various methods like Adsorption, Biological Methods, Filtration, Physiochemical Methods are being employed for effective treatment of - waste water. But Advanced Chemical Oxidation has shown potential in this field as an emerging water treatment technique because it is cheap, less time consuming and environmentally friendly. The present research work is based on the effective treatment of Methyl Orange Dye solution by Electro Fenton Method (Advanced Oxidation). For achieving the objective, a synthetic Dye solution was treated by Electro Fenton Process using Iron anode (which served as sacrificial anode).Box Behenken Design was used for designing the experimental sequences for the present study. However single parameter optimization was also done to see the effect of major parameters affecting the dye degradation. Characterization of electrode using techniques like FE-SEM was done. Effect of process parameters like initial pH, Current Density, Reagent Dose, NaCI Concentration on Dye removal has been determined. The optimum condition for maximum COD removal was pH 3.32, Current Density of 82.28A/m2, NaCl conc of 2gm/L, Reagent Dose of 4.842mL/L. The analysis of results was done by ANOVA for synthesized Dye water used in the study. Regression model was also done for COD removal from Methyl Orange Dye solution. Finally quadratic model for COD removal proved to be the best fit for experimental findings. Characterization of sludge formed during the electro activated oxidation process has also been done.