Cobalt removal from waste-water by means of supported liquid membranes
Verbeken, Kim × Vanheule, Bruno Pinoy, Luc Verhaege, Marc #
Published for the Society of Chemical Industry by Blackwell Scientific Publications
Journal of Chemical Technology and Biotechnology vol:84 issue:5 pages:711-715
BACKGROUND: Supported liquid membranes (SLM) are an alternative technique to remove and recover metals from diluted process solutions and waste-water. In the present work, the removal of Co(II) from a synthetic CoSO4 solution containing initial amounts of cobalt(II) in the range 100-200 ppm (0.1-0.2 g dm(-3)) has been studied on a pilot scale. By performing batch equilibrium experiments, the optimal settings, i.e. the composition of the organic phase, the pH of the feed, the type and concentration of the stripping agent were determined.