Classical‐Fenton and Photo‐Fenton oxidation of wastewater arising from cosmetic automobile care products

Abstract

AbstractThe goal of the study is to investigate Classical‐Fenton and Photo‐Fenton oxidation from Fenton‐based advanced oxidation processes for wastewater treatment arising from cosmetic automobile care products. The main factors that affected Fenton processes (pH, H2O2 doses, Fe2+ doses, and H2O2/Fe2+ ratios) were examined to optimize the operating conditions in batch reactors. The optimal pH values for both systems were found as 3. The optimum experimental conditions were determined as 300 mg/L of Fe2+ dosage, 1050 mg/L of H2O2 dosage and 600/300 of H2O2/Fe2+ ratios for Classical‐Fenton; 300 mg/L of Fe2+ dosage, 900 mg/L of H2O2 dosage, and 600/300 of H2O2/Fe2+ rates for Photo‐Fenton process. In all these cases, COD removals were obtained as 75% in Classical‐Fenton process and around 85% in Photo‐Fenton process. The kinetic model results indicated that the experimental data was represented well by Behnajady–Modirshahla–Ghanbery model (R2 = 0.99) for both Fenton processes. Finally, it is concluded that Classical‐Fenton and Photo‐Fenton processes were effective for COD removal from cosmetic wastewater. Photo‐Fenton process as an oxidative removal process was exhibited more promising results due to rapid degradation, higher removal performance, fewer reagents usage, simple handling, and protecting of process effectiveness.