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