Journal
HYDROMETALLURGY
Volume 154, Issue -, Pages 88-94Publisher
ELSEVIER
DOI: 10.1016/j.hydromet.2015.04.007
Keywords
Cadmium(II); Cyphos IL 104; Polymer inclusion membrane (PIM); Ionic liquids; Solvent extraction
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In this work the comparative studies between solvent extraction and transport across polymer inclusion membranes (PIMs) have been carried out for the removal of cadmium(II) from aqueous chloride solutions. Cyphos IL 104 (trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentyl)phosphinate) was used as extractant/ion carrier in both processes. Effect of different parameters such as hydrogen ion concentration, chloride ion concentration as well as hydrochloric acid concentration in aqueous phase on cadmium(II) extraction has been investigated. Cellulose triacetate membranes with Cyphos IL 104 as carrier have been prepared and applied for removal of Cd(II) from HCl and NaCl solutions. Cd(II) ions were effectively removed from the source phase by transport through PIM into 1M H2SO4 as the receiving phase. Also separation of Cd(II) was carried out from 1 M HCl solution containing Cu(II), Co(II) and Ni(II) and the separation coefficients were found in order of S-cd/cu
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