Construction of Novel Electro-Fenton Systems by Magnetically Decorating Zero-Valent Iron onto RuO2-IrO2/Ti Electrode for Highly Efficient Pharmaceutical Wastewater Treatment

The Electro-Fenton (E-Fenton) technique has shown great potential in wastewater treatment, while the sustainable and continuing supply of Fe2+ remains challenging. Herein, we demonstrate construction a novel E-Fenton system by magnetically decorating zero-valent iron (ZVI) onto RuO2-IrO2/Ti (ZVI-RuO2-IrO2/Ti) electrode for high-efficient treatment pharmaceutical wastewater, which is considerably refractory harmful to conventional biological processes. By using ZVI as durable source Fe(II) irons, 78.69% COD 76.40% TOC may be rapidly removed developed ZVI-RuO2-IrO2/Ti electrode, only reduces 35.64% under optimized conditions at initial values 5500 mg/L 4300 mg/L, respectively. Moreover, increase BOD5/COD from 0.21 0.52 highlights enhanced biodegradability treated effluent. analysis simultaneously formed precipitation on electrodes suggests that coagulation process dominated Fe3+/Fe2+ also plays non-negligible role treatment. In addition, monitoring evolution nitrogen elements formation by-products verifies its capacity toward those organic pollutants found wastewater. Our study offers practical solution enhancing performance systems, effectively treating