M. Ibrahim, H. and H. salman, R. 2022. Study the Optimization of Petroleum Refinery Wastewater Treatment by Successive Electrocoagulation and Electro-oxidation Systems. Iraqi Journal of Chemical and Petroleum Engineering. 23, 1 (Mar. 2022), 31–41. DOI:https://doi.org/10.31699/IJCPE.2022.1.5.