A study on ZIF-67 augmented Electrocoagulation process for Wastewater Treatment

Abstract The persistent contamination of water bodies with toxic pollutants represents a significant challenge that requires appropriate treatment. This research investigated the potential of ZIF-67 augmented electrocoagulation l treatment for wastewater treatment. The investigation focused on key variables, including pH (5-9), current density (9.26-23.15 mA/cm²), ZIF-67 dose (30-50 mg/L), dye concentration (50-100 mg/L), and reusability. The results demonstrated a notable enhancement in the elimination of textile dye, with a significant increase from 82.32% to 95.40% observed in the electrocoagulation process when 50 mg/L of ZIF-67 was introduced. The maximum dye removal (up to 99 %) was achieved at the optimum parameters of pH 7, current density 18.52 mA/cm², 50 mg/L ZIF-67, and 50 mg/L dye concentration, respectively, demonstrating efficient reusability. For real wastewater treatment, at optimal conditions, the chemical oxygen demand (COD), biological oxygen demand (BOD) and colour removals achieved were 42.21%, 39.10% and 59.11%, respectively. The research suggested that an electrocoagulation combined MOF process has the potential to be an effective method for the wastewater remediation.