A.L. Ahmad, M.M.H. Shah Buddin, B.S. Ooi, Adhi Kusumastuti
This work aims to investigate the best formulation of Emulsion Liquid Membrane to be used for cadmium removal from aqueous solution. The parameters involved in this study are carrier (Aliquat 336) and surfactant (Span 80) concentration, emulsification time as well as initial W/O (water-in-oil) volume ratio. Their effects on cadmium removal efficiency, E(%) were investigated together with their influence on emulsion swelling, δ(%). The emulsion globule was observed under a microscope to track its size change as the extraction process took place and the data were later used to quantify the occurrence of emulsion swelling. Corn oil was used as diluent to dissolve 3 wt.% of both, Aliquat 336 and Span 80 in forming the membrane phase. W/O mixture at volume ratio of 0.33 was homogenized for 12 min to prepare the emulsion and it was found to effectively remove 98.15% of cadmium at minimal swelling (34.24%). © 2016 Balaban Desalination Publications. All rights reserved.
School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, 14300, Pulau Pinang, Malaysia; Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, 40450, Selangor, Malaysia; Department of Chemical Engineering, Universitas Negeri Semarang, Kampus Sekaran, Gunungpati, Semarang, 50229, Indonesia
