Electrochemical Hydrogen Peroxide Generation and Activation Using a Dual-Cathode Flow-Through Treatment System: Enhanced Selectivity for Contaminant Removal by Electrostatic Repulsion.

ABSTRACT: To oxidize trace concentrations of organic contaminants under conditions relevant to surface- and groundwater, air-diffusion cathodes were coupled to stainless-steel cathodes that convert atmospheric O₂ into hydrogen peroxide (H₂O₂), which then was activated to produce hydroxyl radicals (^·OH). By separating H₂O₂ generation from its activation and employing a flow-through electrode consisting of stainless-steel fibers, the two processes could be operated efficiently in a manner that overcame mass-transfer limitations for O₂, H₂O₂, and trace organic contaminants. The flexibility resulting from separate control of the two processes made it possible to avoid both the accumulation of excess

SUBMITTER: Duan Y 

PROVIDER: S-EPMC11308524 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature