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Membranes 2018, 8(2), 21; https://doi.org/10.3390/membranes8020021

Applicability of a Supported Liquid Membrane in the Enrichment and Determination of Cadmium from Complex Aqueous Samples

Department of Chemistry, University of Girona, C/Maria Aurèlia Capmany 69, 17003 Girona, Spain
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Received: 21 March 2018 / Revised: 11 April 2018 / Accepted: 11 April 2018 / Published: 23 April 2018
(This article belongs to the Special Issue Advances in Liquid Membrane-Based Separation)
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Abstract

A supported liquid membrane is developed for the separation of Cd from either high in salinity or acidity aqueous media. The membrane consisted of a durapore (polyvinylidene difluoride) polymeric support impregnated with a 0.5 M Aliquat 336 solution in decaline. The effect of carrier concentration, organic solvent and feed and receiving solutions on the metal permeability is studied. This system allows the effective transport of trace levels of Cd through the formation of CdCl42−, which is the predominant species responsible for the extraction process, in both NaCl and HCl solutions. The supported liquid membrane system in a hollow fibre configuration allows the enrichment and separation of trace levels of Cd from spiked seawater samples, facilitating the analytical determination of this toxic metal. View Full-Text
Keywords: solid supported liquid membrane; hollow fibre; Aliquat 336; cadmium; seawater solid supported liquid membrane; hollow fibre; Aliquat 336; cadmium; seawater
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Pont, N.; Salvadó, V.; Fontàs, C. Applicability of a Supported Liquid Membrane in the Enrichment and Determination of Cadmium from Complex Aqueous Samples. Membranes 2018, 8, 21.

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