Résumé
The process called pertraction or non-dispersive solvent extraction (NDSX) is a technique whichallows the metals recovery from leach solutions. It is a liquid-liquid extractor in which the interfacialarea is delimited by a porous membrane separating two immiscible phases, the aqueous phasecontaining the species to be extracted and the organic phase forming the extractant. In the case ofthe figure bellow, organic phase passing through the shell side of the module wets the hydrophobicmembrane. A non-wetting aqueous phase is passed through the lumen side of the membrane.