DISPLAYED "END EFFECTS" FOR EXTRACTION WITH EMULSIONNED LIQUID MEMBRANES. MASS-TRANSFER MODEL OF EXTRACTION OF ZINC WITH D2EHPA IN SINGLE DROP APPARATUS

J.-F. Le Bon (1) , Arnaud Buch (1) , Dominique Pareau (1) , C. Leroi (1) , J. El Bekri (1) , Moncef Stambouli (1)

1 LGPM - Laboratoire de Génie des Procédés et Matériaux - EA 4038

We state that mass-transfer experiments in ELM extraction with the single-drop apparatus offer an original result from the kinetics point of view during the drop-formation step namely, the "end effects". To characterize this phenomenon, we have developed a mass-transfer model for carrier-facilitated transport in emulsion liquid membranes, that is based on the diffusion flux in external aqueous phase and on the extraction reaction at the interface between the Zn2+ ions and the carrier molecules for the recovery of zinc from an aqueous solution by the di-(2-ethylhexyl) phosphoric acid (D2EHPA) carrier with water/oil/water emulsion-liquid membranes.

Domaines: Génie chimique

J.-F. Le Bon, Arnaud Buch, Dominique Pareau, C. Leroi, J. El Bekri, et al.. DISPLAYED "END EFFECTS" FOR EXTRACTION WITH EMULSIONNED LIQUID MEMBRANES. MASS-TRANSFER MODEL OF EXTRACTION OF ZINC WITH D2EHPA IN SINGLE DROP APPARATUS. Proceedings of International Solvent Extraction Conference ISEC'08, Sep 2008, Tucson, United States. pp.1397-1402. ⟨hal-00796616⟩