Interfacial adsorption of methyl orange in liquid phase of foam fractionation using dodecyl dimethyl betaine as the collector

It is important to develop an environment-friendly collector for removing or recovering harmful nonsurface-active materials using foam fractionation. Dodecyl dimethyl betaine (BSI 2) was used as the collector for studying the interfacial adsorption of methyl orange (MO) in the liquid phase. The maxima of the surface excess and the enrichment ratio of MO were 22.7% and 51.5%, respectively under pH of 5 and the BS12 concentration of 0.40 g/L. The results indicated that BSI 2 was an effective and environmental collector and it can promote the development and application of foam fractionation for the removal of harmful non-surface-active materials. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.