Encyclopedia of Applied Electrochemistry

2014 Edition
| Editors: Gerhard Kreysa, Ken-ichiro Ota, Robert F. Savinell

Organic Pollutants, Oxidation on Active and Non-Active Anodes

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First Online:
DOI: https://doi.org/10.1007/978-1-4419-6996-5_450
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Introduction

Electrochemical oxidation has attracted research interest for over two decades as a possible technology for remediation of water pollutants that resist conventional biological and chemical treatment. Several reviews have appeared in recent years [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]. Advantages commonly put forward include simple equipment, versatility, operation at ordinary temperature and pressure, amenability to automation [ 7], low cost per mol of electrons, and environmental friendliness as a reagent, as compared with chemical oxidants. Electrochemical oxidations may be categorized as follows, with minor differences in terminology among investigators:

  • Direct oxidation: the substrate transfers electron(s) directly to the anode to form, initially, the substrate radical cation.

  • Indirect oxidation: a substance other than the substrate is oxidized at the anode and in turn oxidizes the substrate.

  • Mediated oxidation: a subset of indirect oxidation in which the substance that is...

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References

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© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Department of ChemistryElectrochemical Technology Centre, University of GuelphGuelphCanada