Electrochemical pre-treatment of effluents containing chlorinated compounds using an adsorbent

Electrochemical pre-treatment of industrial wastewater to remove refractory and/or toxic organic components, making them more amenable to biological treatment, is likely to be more cost-effective than using a physical or chemical process for complete organic removal. This paper demonstrates the use...

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Bibliographic Details
Published in:Journal of applied electrochemistry 2007-11, Vol.37 (11), p.1329-1335
Main Authors: Brown, N. W., Roberts, E. P. L.
Format: Article
Language:English
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Summary:Electrochemical pre-treatment of industrial wastewater to remove refractory and/or toxic organic components, making them more amenable to biological treatment, is likely to be more cost-effective than using a physical or chemical process for complete organic removal. This paper demonstrates the use of a carbon-based adsorbent material that preferentially removes chlorinated organic compounds. Electrochemical regeneration of the adsorbent is shown to be a quick, easy and cheap process, because the adsorbent is both highly electrically conducting and non-porous. High regeneration rates over a number of cycles were obtained by passing a charge of 25 C g super(-1) through a bed of adsorbent particles, at a current density of 20 mA cm super(-2) for 10 min. The energy required to remove a kg of COD from an industrial wastewater was calculated to be 27 kWh.
ISSN:0021-891X
1572-8838
DOI:10.1007/s10800-007-9376-3