13993

A Kinetic Investigation of a Carrier-Mediated Transport Through a Bulk Liquid Membrane

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The kinetics of the potassium thiocyanate transport mediated by dicyclohexyl-18crown-6 (L) through a bulk liquid membrane is studied experimentally and theoretically. The proposed model is based on the assumption of a pure diffusion of the complex salt [KeLJ+SCNthrough the liquid membrane stagnant films at the interfaces. It illustrates the connection between liquid-liquid extraction equilibrium data anf! transport rates. The evaluation of the transfer coefficient allows to evaluate the organic stagnant films thickness, the stationary state transport rate and the time lag.

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