Abstract
This paper describes a batch-recycle galvanic reactor, operated in the flow-by configuration, for the removal of copper from dilute industrial effluents. A three-dimensional cathode, 80 ppi reticulated vitreous carbon, was used for this purpose. Mass transfer studies show that the average mass transfer coefficient was proportional to the Reynolds number, Ref, where f=0.68, which was independent of the concentration of reactant species under the experimental conditions. A comparison of the performance between a single-pass and a batch-recycle reactor was also conducted with an initial copper concentration of 10 mg l−1, 100 mg l−1 and 500 mg l−1. A 500 ml feed of 74.2 mg l−1 of copper in electroplating rinse water with a low conductivity of 1.2 mS cm−1 was reduced to less than 1.0 mg l−1 in 150 min at a flow rate of 500 ml min−1.
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Acknowledgements
The authors wish to thank the Ministry of Science, Technology and Environment of Malaysia for financial support of this work through an IRPA grant and the Universiti Sains Malaysia for providing a short-term grant. Special thanks are also due to School of Chemical Sciences, Institute of Postgraduate Studies and a local electroplating company for their support and assistance.
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Hor, Y., Mohamed, N. Removal and recovery of copper via a galvanic cementation system part II: batch-recycle reactor. J Appl Electrochem 35, 609–613 (2005). https://doi.org/10.1007/s10800-005-2322-3
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DOI: https://doi.org/10.1007/s10800-005-2322-3