Extraction of Lead through Supported Liquid Membrane Using Triethanolamine/Cyclohexanone Carrier and Na2SO4 strippantR. Gill, N. Bukhari, S. Safdar and S. M. BatoolE3S Web of Conferences, 1 (2013) 09003DOI: https://doi.org/10.1051/e3sconf/20130109003