The electrochemical recovery of iron in a two-compartment batch electrochemical reactor |
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| Authors: | DJ Pickett D Dingle |
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| Affiliation: | Department of Chemical Engineering, The University of Manchester Institute of Science and Technology, Manchester England;Pollution Research Unit, The University of Manchester, Manchester England |
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| Abstract: | A model has been developed for a two-compartment batch electrochemical reactor in which simultaneous iron deposition and hydrogen evolution occur at the cathode, the anodic reaction being the production of hydrogen ions. The model incorporates ionic diffusivities through the diaphragm and a composite kinetic parameter for the cathodic reactions. In order to apply the model to data from a small batch reactor, the diffusivities have been obtained under conditions in which hydrogen alone is evolved at the cathode. The value of the kinetic parameter has been chosen to provide the best agreement between the model predictions and the experimental results. Satisfactory predictions of the current efficiency for iron deposition and the final concentrations in the reactor has been obtained, the largest discrepancies between predicted and actual concentrations being at high anolyte hydrogen ion concentrations. Reasons for these discrepancies are discussed. |
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| Keywords: | Author to whom correspondence should be addressed |
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