Optimization of Fenton oxidation to treat textile wastewater

Abstract

Studies were made to identify the characteristics of the textile wastewater and the operating parameter that affect for the Fenton treatment in the textile wastewater were assessed. The three variable considered in this process are concentration of H2O2, concentration of Fe2+ and the reaction time. The Central Composite Design from the Design of Expert was used to identify the relationship of the three parameters towards the removal of the colour in the textile wastewater. Then 20 experiments, with 3 factors and 2 level for each factor were designed. To get the optimum condition with the highest removal of the colour, the concentration of Fe2+ and H2O2 were selected at minimum dosage. The results indicated that optimum conditions for the removal of colour were at 145.82 mM for H2O2 concentration, 9.62 mM for Fe2+ concentration and 83.92 minute for reaction time. The highest percentage removal of the colour are 98.18%. The analysis of variance (ANOVA) and regression with R2 values of 0.9707 for the removal of the colour indicated that the result achieved from the experiments are near the predicted values