EXTRACTION OF COBALT AND LEAD FROM WASTE WATER USING A LIQUID SURFACTANT MEMBRANE EMULSION

Saliha Bourenane, Mohamed El-Hadi Samar

Faculté des Sciences de l’Ingénieur, Département des Génies des Procédés, Université Badji-Mokhtar, B. P. 12, El-Hadjar, Annaba (23200), Algeria, E-mail: Samarmh@yahoo.fr

Azzedine Abbaci*

Faculté des Sciences, Département de Chimie, Université Badji-Mokhtar, B. P. 12, El-Hadjar, Annaba (23200), Algeria, Tél:+213-38-86-49-94, Fax:+213-38-86-85-10, E-mail: abbaci_a2002@yahoo.fr

Abstract

The applicability of the Liquid Surfactant Membrane (LSM) process for the removal and the concentration of lead and cobalt was investigated. The aim of this work is to find a process for the purification of wastewater, which contains cobalt and lead. A complete study of the metal extraction by the liquid membrane process using HDEHP as extractant and SPAN 80 as surfactant is performed in terms of extraction and stripping efficiencies, emulsion breaking and swelling. The results show that it is possible to recover 98.83% of cobalt and 94.21% of lead in the inner phase after 2 minutes of contacting time with a concentration factor of 50 for lead and 50 for cobalt.