Diamond electrode facilitated electrosynthesis of water and wastewater treatment oxidants |
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Authors: | Adrián Serrano Mora Sean T McBeath Clément A Cid Michael R Hoffmann Nigel JD Graham |
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Institution: | 1. Escuela de Ingeniería Química, Universidad de Costa Rica, San José, Costa Rica;2. Linde Laboratories, California Institute of Technology, Pasadena, CA, USA;3. Department of Civil & Environmental Engineering, Imperial College London, London, UK |
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Abstract: | 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 non-selective, 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. |
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Keywords: | Boron-doped diamond Water Wastewater Electrosynthesis Oxidant Oxidation |
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