Facilitated Transport of Cu (II), Zn(II) and Cd(II) Through Supported Liquid Membrane Mediated by Try-n-Butyl Phosphate

Abstract

Abstract Transport of divalent metal ions M (II) = Cu(II), Zn(II) and Cd(II) from hydrochloric acidic and Lithium chloride solutions through supported liquid membrane Celgard 2500 impregnated with try-n-butyl phosphate (TBP) has been studied. The efficiency of the membrane transport has been optimized according to various parameters of aqueous source, stripping phases and the membrane. The results show that the TBP carries the divalent metals as MCl2 2TBP species from acidic medium and as Li2+MCl42-ion-pair from lithium chloride solutions. A Quantitative transport of three metal ions is obtained from hydrochloric acidic solutions and the selectivity of TBP toward a Cd(II) ion transport is better than two others metals. The conditions of the co-transport of hydrochloric acid and the counter-transport of H2O molecules have been determined.