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KMID : 1059519940380020122
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Journal of the Korean Chemical Society
1994 Volume.38 No. 2 p.122 ~ p.128
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Separation and Recovery of Heavy Metal Ion using Liquid Membrane
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Cho Moon-Hwan
Jung Hak-Jin
Lee Sang-In
Kim Jin-Ho
Kim Si-Joong
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Abstract
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Macrocyclic ligand has been known to selectively bind with metal ions so that ability applied for the transport of metal ions across the emulsion liquid membrane in this study. The metal ions are transproted from the source phase to the receiving phase by the carrier of the organic phase. Several factors involved in the transport of metal ions acrose the emulsion membrane we reported here and these factors provided the informations for the selective seperation of some metal ion. Stability constants for cation-macrocyclic ligand and metal ion-anion receiving phase interaction are examined as parameters for the prediction of metal ion transport selectivities. Pb2+ was transported higher rates than the other metal ions in the mixture solution. The interaction of metal ion to anion in receiving phase is important. S2O32- in replacement of NO3- in the receiving phase enhances the transport of Pb2- since Pb2--S2O32- interaction is greater than Pb2+-NO3- interaction.
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