Abstract
The coupled transport of Cu 2+ and H + ions through solid supported liquid membranes consisting of a porous polypropylene film immobilizing a β-hydroxy-oxime (carrier) in toluene has been studied as function of both the hydrodynamic conditions and the chemical composition of the system. Data have been obtained using a wide range of metal concentrations, up to complete loading of the membrane carrier with Cu 2+ ions. The experimental results have been quantitatively explained by a previously derived permeability coefficient equation taking into account both the self-association and the progressive saturation by copper ions of the membrane carrier. The thickness of the aqueous diffusion films and the membrane diffusion coefficient of the Cu 2+—carrier complex have been evaluated.
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