Auto-inhibition effects in anodic oxidation of phenols for electrochemical waste-water purification
Removal or modification of noxious organic impurities in waste-waters is a major challenge for environmental science. Pollutants such as phenols and their derivatives, as well as PCBs, have attracted special attention. In recent years, the possibilities of effecting direct electrocatalytic...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Serbian Chemical Society
2001-01-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2001/0352-51390112765A.pdf |
| Summary: | Removal or modification of noxious organic impurities in waste-waters is a
major challenge for environmental science. Pollutants such as phenols and
their derivatives, as well as PCBs, have attracted special attention. In
recent years, the possibilities of effecting direct electrocatalytic
oxidations at high-area electrodes such as supported Pt or RuO2 have been
investigated. However, in a number of cases, especially with phenolic
impurities, application of anodic oxidation fails to lead to continuous
Faradaic oxidation currents owing to the electrode surfaces becoming blocked
with polymeric oxidation products leading to auto-inhibition (“passivation”)
of the desired electrode process. Examples of such effects with phenols and
related compounds are examined comparatively in the present paper by means
of cyclic volatammetry and chronoamperometry. |
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| ISSN: | 0352-5139 1820-7421 |