Abstract
The technique of supported liquid membranes (SLM’s) was used to achieve the facilitated transport of
Chromium ions (Cr(VI) and Cr(III), using Methyl Cholate as carrier, widely used for afacilitated transport
of carbohydrates. For our (SLM’s), we use toluene as an organic phase and microporousfilm ofPVDF as
support.Permeability P and initial flux J0 were determined for different studied factors and the prepared
membranes are highly permeable. The mechanism based on the complexation of the substrate by the
carrier and the diffusion of the complex (ST) was developed. Theresults of this phenomenon are used to
determinethe association constantKassand the apparent diffusion coefficientD*. Thesestudiesshow
thattheseparametersKass andD*are changingsignificantly with different studied factors, and better
extractionof this substrate is possible.
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