Polycyclic aromatic hydrocarbons removal from produced water by electrochemical process optimization

Abstract

Produced water is actually the wastewater separated from petroleum crude oil. Electrochemicaloxidation experiments was conducted for degradation of 16 priority polycyclic aromatic hydrocarbons (PAHs) using DSA type Ti/IrO2 anode. Laboratory scale batch reactor was used for degradation studies. To get the maximum PAHs removal electrochemical process optimized on three independent variable current density, pH and electrolysis time. The response surface modelling (RSM) based on a Box-Behnken design was applied to get appropriate experimental design. X1, X2 and X3 are the coded factors of independent variables such as the current density, pH and electrolysis time, respectively. Maximum removal was 95.29% at optimized conditions such as current density of 9 mA/cm 2 , pH 3 and electrolysis time 3.7 h. Quadratic model was suggested best fit model. The results of the Analysis of Variances (ANOVA) for PAHs demonstrated that the model was highly significant.

Personal Care Wastewater Treatment With Electro-coagulation and Electro-oxidation

“…It is well known that anode material plays a key role in advanced electrochemical oxidation systems, its performance depends upon the nature of coating materials on the electrodes [13]. Dimensionally Stable Anodes (DSAs) electrodes have characteristics and capabilities in processing industrial waste and wastewater in general [14].…”

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“…0 or 4.0-10.0(El-Ghenymy et al, 2013;El- Ghenymy et al, 2014). While according to(Wu et al, 2012;Garcia et al, 2015;Yaqub et al 2017a;Ajab et al, 2020) the process shows its effect when the pH of the sample was kept at 3. In many studies, type of electrolyte veils the effects of pH e.g.…”