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The Treatment of Wastewater Using an Electrochemically Regenerated Carbon Based Adsorbent
Author            :Nigel Brown
Designation    :Research Associate, Dept. of Chemical Engineering
Company        :UMIST
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Synopsis
A novel, carbon based adsorbent material is being commercially developed to remove trace coloured, toxic and non-biodegradable organics from wastewaters. The adsorbent concentrates the organics onto the adsorbent surface and has been found to be effective in removing a range of contaminants to low concentrations. This paper investigates the electrochemical regeneration of the adsorbent material for reuse in a simple electrochemical cell achieving regenerated adsorption capacities in excess of 99% of its original capacity. Effective regeneration can be achieved with a treatment time as low as 10 minutes. This can be achieved with minimal loss of adsorbent over a number of adsorption/regeneration cycles using laboratory prepared solutions. The results indicate that a low cost adsorption-regeneration process can be developed with in-situ regeneration of the adsorbent. The work has been extended to include test work on dyehouse and sewage works' tertiary effluents.

Industry IDS
IRC International Water and Sanitation Centre Water Supply & Sanitation Collaborative Council International Desalination Association
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