Aquatic environment

Feasibility and advantage of biofilm-electrode reactor for phenol degradation

ZHANG Xuena , HUANG Weimin , WANG Xuan , GAO Yu , LIN Haibo


Received October 21, 2008,Revised February 04, 2009, Accepted , Available online

Volume 21,2009,Pages 1181-1185

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The new biofilm-electrode method was used for the phenol degradation, because of its low current requirement. The biofilm-electrode reactor consisted of immobilized degrading bacteria on Ti electrode as cathode and Ti/PbO2 electrode as anode. With the biofilmelectrode reactor in a divided electrolytic cell, the phenol degradation rate could achieve 100% at 18 h which was higher than using traditional methods, such as biological or electrochemical methods. Chemical oxygen demand (COD) removal rate of the biofilmelectrode reactor was also greater than that using biological and electrochemical method, and could reach 80% at 16 h. The results suggested that the biofilm-electrode reactor system can be used to treat wastewater with phenol.

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