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A comparison of electrochemical degradation of phenol on boron doped diamond and lead dioxide anodes

Groenen Serrano, Karine and Savall, André and Weiss-Hortala, Elsa A comparison of electrochemical degradation of phenol on boron doped diamond and lead dioxide anodes. (2007) Journal of Applied Electrochemistry, 38 (3). 329-337 . ISSN 0021-891X

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Official URL: http://dx.doi.org/10.1007/s10800-007-9442-x


This work compares two electrode materials used to mineralize phenol contained in waste waters. Two disks covered with either boron doped diamond (BDD) or PbO2 were used as anodes in a one compartment flow cell under the same hydrodynamic conditions. Efficiencies of galvanostatic electrolyses are compared on the basis of measurements of Total Organic Carbon (TOC) and Chemical Oxygen Demand (COD). Galvanostatic electrolyses were monitored by analysis of phenol and of its oxidation derivatives to evaluate the operating time needed for complete elimination of toxic aromatics. The experimental current efficiency is close to the theoretical value for the BDD electrode. Other parameters being equal, phenol species disappeared at the same rate using the two electrode materials but the BDD anode showed better efficiency to eliminate TOC and COD. Moreover, during the electrolysis less intermediates are formed with BDD compared to PbO2 whatever the current density. A comparison of energy consumption is given based on the criterion of 99% removal of aromatic compounds.

Item Type:Article
Additional Information:This article is available in: http://springerlink.com/content/j18256t76p885254/
HAL Id:hal-03592156
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
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Deposited On:15 Jul 2009 13:21

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