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Performance of an Electrocoagulation Process in Treating Direct Dye: Batch and Continuous Upflow Processes

By C. Phalakornkule, S. Polgumhang and W. Tongdaung

Abstract

Abstract—This study presents an investigation of electrochemical variables and an application of the optimal parameters in operating a continuous upflow electrocoagulation reactor in removing dye. Direct red 23, which is azo-based, was used as a representative of direct dyes. First, a batch mode was employed to optimize the design parameters: electrode type, electrode distance, current density and electrocoagulation time. The optimal parameters were found to be iron anode, distance between electrodes of 8 mm and current density of 30 A·m-2 with contact time of 5 min. The performance of the continuous upflow reactor with these parameters was satisfactory, with>95 % color removal and energy consumption in the order of 0.6-0.7 kWh·m-3

Topics: Direct Dye, Electrocoagulation, Textile Wastewater, Upflow Reactor
Year: 2011
OAI identifier: oai:CiteSeerX.psu:10.1.1.193.4000
Provided by: CiteSeerX
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