In this study, response surface methodology (RSM) approach using Central Composite Design (CCD) was applied to develop mathematical model and optimize process parameters for COD removal from cosmetic industry wastewater by electro-Fenton process. Evaluation of the effects and interactions of process variables; pH, current, reaction time and H2O2/COD ratio were studied. Analysis of variance (ANOVA) showed the relative significance of process parameters in removal process. The second-order regression model was developed to predict the removal efficiencies using Statgraphics Centurion XVI.I software programme. The obtained optimum values via model for pH: 4, current: 4 A, reaction time: 27.6 min, H2O2/COD: 2 were determined. Under optimal values of process parameters 86% COD removal efficiency was obtained. The operational cost including both electricity and the electrode consumption at optimum conditions were determined to be 6.18 €/m3. Results of the study showed that RSM is a powerful tool for optimizing the operational conditions of electro-Fenton for COD removal from cosmetic industry wastewater.
Primary Language | Turkish |
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Journal Section | Articles |
Authors | |
Publication Date | March 31, 2019 |
Published in Issue | Year 2019 Volume: 34 Issue: 1 |