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Lookup NU author(s): Dr Hua Cheng, Emeritus Professor Keith Scott, Professor Paul ChristensenORCiD
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A new technology for remediation of halogenated organics-oil systems, which can cause serious environmental problems, has been demonstrated using the electrochemical hydrodehalogenation of 2,4-dibromophenol (DBP) in paraffin oil in a solid polymer electrolyte reactor. The reactor has been evaluated in terms of cathode materials and structure and the ratio of the cathode surface area to the solution volume. A cathode of titanium minimesh with a palladium electrocatalyst produced by electrodeposition was particularly effective. Current efficiencies of up to 85% and percentage of DBP removal of up to 62%, space-time yields of up to 7.6 kg DBP m-3 h-1, and energy consumption as low as 1.6 kW h (kg of DBP)-1 were achieved. The reactor showed stable operation for periods of up to 170 h. The results demonstrated that electroreduction could be an alternative technology to electrooxidation for the treatment of wastes and toxic halogenated compounds, making the process simpler in comparison to electrooxidation.
Author(s): Cheng H, Scott K, Christensen PA
Publication type: Article
Publication status: Published
Journal: Environmental Science and Technology
Year: 2004
Volume: 38
Issue: 2
Pages: 638-642
ISSN (print): 0013-936X
ISSN (electronic): 1520-5851
Publisher: American Chemical Society
URL: http://dx.doi.org/10.1021/es034775u
DOI: 10.1021/es034775u
PubMed id: 14750742
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