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

N. W. Brown, E. P L Roberts

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    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-1 through a bed of adsorbent particles, at a current density of 20 mA cm-2 for 10 min. The energy required to remove a kg of COD from an industrial wastewater was calculated to be 27 kWh. © 2007 Springer Science+Business Media B.V.
    Original languageEnglish
    Pages (from-to)1329-1335
    Number of pages6
    JournalJournal of Applied Electrochemistry
    Issue number11
    Publication statusPublished - Nov 2007


    • Chlorinated phenols
    • Electrochemical regeneration
    • Industrial wastewater
    • Nyex
    • Phenol
    • Pre-treatment
    • Preferential adsorption


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