Lasalocid (X537A) as a selective carrier for Cd(II) in supported liquid membranes - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue Journal of Membrane Science Année : 1998

Lasalocid (X537A) as a selective carrier for Cd(II) in supported liquid membranes

Résumé

The carboxylic antibiotic lasalocid was shown to facilitate the transport of Cd(II) cations through supported liquid membranes, the driving force being the proton gradient between the two aqueous phases. With hydrocarbons as solvents inside the porous support, the initial metal fluxes were linear versus the inverses of the viscosity values, in accordance with a diffusion limited mechanism. With the polar solvent nitrophenyl octyl ether, the initial flux was six times higher than expected from the viscosity value, and up to 95% of the metal ions were transported. In competitive experiments with equal initial Cd(II) and Zn(II) concentrations, after 94% of Cd(II) had been transported the ratio of Cd(II) to Zn(II) in the receiving phase was 3.8 (pH 8.2 in the source phase, pH 2 in the receiving phase, membrane impregnated with lasalocid 5×10−3 M in nitrophenyl octyl ether).

Domaines

Chimie

Dates et versions

hal-01727871 , version 1 (09-03-2018)

Identifiants

Citer

N. Aouad, G. Miquel-Mercier, E. Bienvenue, E. Tronel-Peyroz, G. Jeminet, et al.. Lasalocid (X537A) as a selective carrier for Cd(II) in supported liquid membranes. Journal of Membrane Science, 1998, 139 (2), pp.167 - 174. ⟨10.1016/S0376-7388(97)00240-8⟩. ⟨hal-01727871⟩
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