Separation Science and Technology · 1999 · 19 citations · 9 references
EngineeringChemical EngineeringChemistryAnalytical ChemistrySeparation ProcessesSeparation ScienceHeavy Metal RemovalIon-exchange MembranesLiquid Separation MembranesMembrane FabricationSolvent ExtractionCopper ExtractionExtractionsHollow Fiber MembranesMetal Ion ExtractionSelective ExtractionSupported Liquid Membrane ExtractionSupported Liquid MembranesZinc Extraction
Abstract The selective extractions of Zn2+ and Cu2+ from their mixed solutions of sulfate medium have been studied using hollow fiber supported liquid membranes (HFSLM). The HFSLM contained two kinds of extractants; one contained 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester [HEH(EHP)], the commercial name of which is PC88A, for Zn extraction; the other contained the hydroxy oxime reagent LIX84 for Cu extraction. Individual runs of each HFSLM were made to determine the effect of operational variables on the permeation rates of metal ions and their separation factors. In addition, the simultaneous and selective extractions of both Zn2+ and Cu2+ from their mixed solutions were demonstrated using the PC88A and LIX84 HFSLMs together. The performance of simultaneous extraction was compared with those of the individual runs.
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