Phenol Degradation in a Bipolar Trickle Tower Reactor Using Boron-Doped Diamond Electrode
Publication: Journal of Environmental Engineering
Volume 134, Issue 1
Abstract
Electrochemical oxidation of phenol was studied in a bipolar trickle tower reactor using Raschig ring shaped boron-doped diamond (BDD) electrodes in recirculated batch mode. The model wastewater was prepared with phenol using distilled water. The effects of initial phenol concentration, concentration of as a supporting electrolyte, current density, flow rate, and initial pH on the removal efficiency were investigated. The removal of phenol of and chemical oxygen demand (COD) of were achieved with efficiencies of 99.85 and 88.89%, respectively. In the same study, specific energy consumption of phenol removed was determined at the current density of . On the other hand, for the initial phenol concentration of and COD of , 99.69 and 90.83% removal efficiencies were obtained at the current density of , respectively. Microtox toxicity tests were performed to investigate the toxicity reduction potential of BDD anodes, and relatively good toxicity reductions were obtained with respect to the initial values. After determining optimum experimental conditions, petroleum refinery wastewater was also studied by monitoring the destruction of phenol and COD. In this study, phenol removal of 99.53% and COD removal of 96.04% were achieved at the current density of . Chemical oxidation studies were also carried out and the results were compared with the electrochemical oxidation studies. According to the whole results, it can be said that Raschig ring shaped BDD anodes exhibited an excellent performance for the degradation of phenol and COD and for the reduction of toxicity.
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Acknowledgments
This study was supported by Anadolu University Research Fund under Grant No. UNSPECIFIED01.02.52
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 134 • Issue 1 • January 2008
Pages: 24 - 31
Copyright
© 2008 ASCE.
History
Received: Feb 27, 2006
Accepted: Aug 8, 2007
Published online: Jan 1, 2008
Published in print: Jan 2008
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