Akademik Veri Yönetim Sistemi
Journal of Environmental Chemical Engineering, cilt.13, sa.6, 2025 (SCI-Expanded, Scopus)
This study aimed to investigate the application of electrochemical methods to treat wastewater from the plasticizer chemical production industry. These methods are as follows: Electrocoagulation using Al electrodes (EC/Al), electrocoagulation using Fe electrodes (EC/Fe), electrooxidation (EO), electro-Fenton (EF), Fered-Fenton (FF), electrochemical peroxidation (ECP), and peroxicoagulation (PC). In the control studies, electrochemical processes are ranked in terms of chemical oxygen demand (COD) removal efficiency as FF>EF>ECP>PC>EC/Fe>EC/Al>EO. For the control experiments, the lowest energy consumption among the EF types was observed in the PC process at 5.7 kWh/kg COD, while energy consumptions of 10.6 kWh/kg COD and 12 kWh/kg COD were calculated for the EC/Fe and EC/Al processes, respectively. Based on COD removal and energy consumption, EC/Fe and PC were selected and optimized. Optimum conditions are: EC/Fe – pH 7, 0.25 A, inter-electrode distance (IED) 3 cm, 90 min; PC – pH 5, 0.75 A, IED 2 cm, 90 min. Under optimized conditions, the EC/Fe process (EC/Feₒₚₜ) achieved removals of 50.5 % COD, 94.7 % total suspended solids (TSS), 65.9 % color, and 33.2 % UV254, while the PC process (PCₒₚₜ) achieved 60.6 % COD, 91.2 % TSS, 79.6 % color, and 43.1 % UV254 removal. The two selected processes were then operated sequentially, achieving COD removals of 65.6 % and 72.3 % for the hybrid PCₒₚₜ-EC/Feₒₚₜ and EC/Feₒₚₜ-PCₒₚₜ processes, respectively. Energy consumptions were 4.1, 11.2, 6.3, and 5.3 kWh/kg COD for EC/Feₒₚₜ, PCₒₚₜ, and the hybrid PCₒₚₜ-EC/Feₒₚₜ and EC/Feₒₚₜ-PCₒₚₜ processes, respectively, with higher TSS, color, and UV₂₅₄ removal efficiencies observed in the hybrid treatments compared to the individual processes.