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Electrochemical Hydrodehalogenation of 2,4-Dibromophenolin Paraffin Oil Using a Solid Polymer Electrolyte Reactor

Lookup NU author(s): Dr Hua Cheng, Emeritus Professor Keith Scott, Professor Paul Christensen

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Abstract

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.


Publication metadata

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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