Oxidative degradation of electroplating wastewater by an electro-Fenton process using GO/TiO<sub>2</sub>NTs electrode

Electro-Fenton (E-Fenton) is a versatile treatment method; however, it has not yet been used for the of electroplating wastewater using graphene oxide (GO) coated TiO<sub>2</sub> nanotubes (GO/TiO<sub>2</sub>NTs) electrode. A simple anodization technique adopted to synthesize GO/TiO<sub>2</sub>NTs The present work aimed study an E-Fenton investigate effect different parameters on % COD removal and energy consumption performance process was examined in terms consumed at three parameters: current, time, ferrous sulfate concentration. optimum operating conditions were determined multiple responses optimization based Box-Behnken design (BBD). At operational parameters, results revealed that 96.27% 15.35 kWh/m<sup>3</sup>, respectively. pseudo-first-order reaction kinetics fitted experimental data conditions. Possible intermediates identified GC-MS analysis, corresponding tentative degradation pathway proposed. Furthermore, recyclability stability synthesized electrode also performed. Moreover, total organic carbon (TOC) potential detoxify effluents. Hence, electrodes can be highly efficient degrading hazardous pollutants.