Diamond electrode facilitated electrosynthesis of water and wastewater treatment oxidants

While diamond electrodes have been commonly used to generate 'OH to treat a variety of persistent water and wastewater micropollutants, mass transfer limitations and the nonselective, short-lived nature of the 'OH restrict the degradation to the solution at, or near, the electrode surface. However, diamond electrodes can generate oxidizing species that facilitate micropollutant degradation in the bulk water solution. These include persulfate, sulfate radicals, peroxodiphosphate, ferrate, permanganate, reactive chlorine species, hydrogen peroxide, and ozone, which have been reported during electrochemical treatment of water with diamond electrodes. Although still restricted to specialized applications, recent studies, summarized in this review, have proven the electrogeneration of these additional oxidant species to be effective. They have shown the adaptability and potential of diamond electrode-based water treatment to mitigate the presence of micropollutants in water.

Automated summary

Diamond electrodes have been shown to generate various oxidizing species that can effectively degrade micropollutants in water treatment. Recent studies have proven the adaptability and potential of diamond electrode-based water treatment in mitigating the presence of micropollutants in water.