Iranian Research Organization for Science and Technology Journal of Particle Science and Technology 2423-4087 1 4 2015 12 01 Petrochemical wastewater treatment by modified electro-Fenton process with nano iron particles 215 223 270 10.22104/jpst.2015.270 EN Hassan FathinejadJirandehi Young researchers and Elite club, Farahan Branch, Islamic Azad University, Farahan, Iran Maryam Adimi Department of Chemical engineering, Farahan branch, Islamic Azad University, Farahan, Iran Mohammad Mohebbizadeh Department of Chemical engineering, Farahan branch, Islamic Azad University, Farahan, Iran Journal Article 2016 04 06 Petrochemical manufacturing wastewaters often contain a high concentration of biodegradable com-pounds that possess either toxicity or activity inhibition to the biological unit. In this paper, COD removal from Petrochemical wastewaters by electro-Fenton process was studied. The effect of operating conditions such as reaction time, current density, pH, H2O2/Fe2+ molar ratio, and H2O2 of petrochemical wastewater (PW) (ml/l) on the performance of the process has been studied. The experimental results showed that COD was 75.52% removed by the reaction with OH radicals generated from electrochemically assisted Fenton’s reaction. With our cell design, the higher oxidation rate has been obtained applying a current of 57.01 mA, at pH 2.92 and in the presence of 0.3 mM Fe2+ as catalyst and at reaction time of 86.33 minutes. https://jpst.irost.ir/article_270_39059724f73a9969845dfe4146c5660e.pdf