Modelling Hybrid New Design Electrocoagulation–Electro Fenton Oxidation Systems for Efficient Wastewater Treatment
Shaymaa Hamza Anbr Swadi, Ali A. Yasser, Ali Saleh Jafer, Raid Tariq Al-khateeb, Ali A. Hassan, Amer T. Nawaf, Jasim I. Humadi
Abstract
Abstract The need for effective treatment techniques stems from growing environmental concerns over refinery wastewater discharge. In order to improve the treatment of refinery wastewater (RWW), this study investigates the construction of hybrid electrocoagulation–electro-oxidation (EC–EO) systems that combine the advantages of both processes with new design of Electro oxidation reactor. The suggested approach uses electro-oxidation to target refractory substances that are generally intractable by conventional means, while electrocoagulation was utilized to efficiently eliminate organic contaminants and suspended particles. The EC–EO hybrid approach offers a promising solution for sustainable refinery wastewater management, offering a balance between operational efficiency and environmental compliance. Analyses using modeling and simulation techniques with response surface method (RSM) by Minitab software were used to optimize working parameters, such as, Fenton reagent, pH and electrolysis time. Experimental validation was carried out using real refinery wastewater samples; demonstrating significant reductions in organic pollutants with high efficiency 99.5% under ideal conditions of 50-ppm hydrogen peroxide, 6 ppm iron Sulphate, 3 pH, and 30 min of electrolysis time.