Electrocatalytic Oxidation of Nanofiltration Concentrated Landfill Leachate with High‐efficiency Ti/RuO 2 ‐IrO 2 ‐Pt 8% Anode
Year: 2025
Type: article
Abstract: The treatment of nanofiltration concentrate has always been a critical technical challenge in the application of membrane technology for landfill leachate treatment. This study attempts to address this challenge using electrocatalytic oxidation technology. A Pt‐modified Ti/RuO 2 ‐IrO 2 anode was synthesized using a solution method. The results show that Pt was uniformly dispersed within the Ru‐Ir composite oxide phase, and Pt doping induced the formation of numerous disordered and mismatched lattices on the electrode coating surface. The interaction between Pt and the RuO 2 ‐IrO 2 system can enhance the stability of the ternary composite electrode, improve electron transport efficiency, and reduce surface resistance of the electrode coating, thereby increasing the efficiency of chemical reactions. In the treatment of nanofiltration concentrate of landfill leachate, it was found that under conditions of a current density of 20 mA·cm −2 , electrode distance of 0.5 cm, and pH = 5, the removal rates of COD, TOC, and NH 4 + ‐N were 93.5%, 46%, and 98% respectively, with an energy consumption of only 0.66 kWh·(kg TOC) −1 . After 20 repeated experiments, the Ti/RuO 2 ‐IrO 2 ‐Pt 8% anode also demonstrated good stability and catalytic activity.
Source: ChemistrySelect
Authors: Yunqing Zhu, Gaigai Dong, Xuequan Wan, Minghui Ji, Linbo Zhang, Hanlin Wang
Institution: Shaanxi University of Science and Technology
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4407222980