Iranian Association of Chemical Engineering (IAChE) Iranian Journal of Chemical Engineering (IJChE) 1735-5397 20 1 2023 03 01 Synthesize and application of Fe3O4/MW-CNT Composite in photo-catalyst-assisted electrochemical oxidation of BTX compounds from wastewater 54 66 176130 10.22034/ijche.2023.394803.1489 EN M. Ghanbarnezhad Department of Chemical Engineering, Borujerd Branch, Islamic Azad University, Borujerd, Iran A. Parvareh Faculty of Petroleum and Chemical Engineering, Razi University, Kermanshah, Iran 0000-0002-0218-1162 M. Moraveji Faculty of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. 0000-0003-4891-340X S. Jorfi Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Journal Article 2023 04 27 The Fe3O4/MW-CNT composite was prepared for a hybrid photo-catalyst-assisted electrochemical process for the removal of BTX contamination from wastewater. Oxidation of multi-walled carbon nanotube was conducted by different treatments including acid treatment and hydrogen peroxide. The XRD, FTIR, SEM, TEM, and BET analyses were performed to characterize both the MW-CNT and the synthesized composite. Simultaneous photo-catalyst and electrochemical processes were conducted to evaluate the performance of a new hybrid process for wastewater treatment. The effect of current density, photo-catalyst loading, and BTX initial concentration was investigated experimentally. The characterization results of the synthesized composite show that a mixture of strong nitric acid and sulfuric acid treatment at a high exposure time and low temperature is the best route for MW-CNT oxidation. The removal efficiency of BTX compounds from wastewater using the hybrid photo-electrochemical process was found to be in the range of 28 to 43% for different conditions. The optimum condition for maximum removal of BTX was found by mathematical modeling of experimental data. The results indicate that a combination of photo-catalyst and the electrochemical process can enhance the BTX removal efficiency. https://www.ijche.com/article_176130_5b89b8eb60c6bf4c4a7a8db3ddd26152.pdf