Activated carbon as effective cathode material in iron-free Electro-Fenton process: Integrated H₂O₂ electrogeneration, activation, and pollutants adsorption.

ABSTRACT: Major challenges for effective implementation of the Electro-Fenton (EF) water treatment process are that conventional efficient cathodes are relatively expensive, and H₂O₂ activation by Fe²⁺ may cause secondary pollution. Herein, we propose a low-cost activated carbon/stainless steel mesh (ACSS) composite cathode, where the SS mesh distributes the current and the AC simultaneously supports H₂O₂ electrogeneration, H₂O₂ activation, and organic compounds (OCs) adsorption. The oxygen-containing groups on the AC function as oxygen reduction reaction (ORR) sites for H₂O₂ electrogeneration; while the porous configuration supply sufficient reactive surface area for ORR. 8.9 mg/L H₂O₂

SUBMITTER: Zhou W 

PROVIDER: S-EPMC6322679 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature