Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 192, Issue 3, Pages 1283-1290Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2011.06.037
Keywords
Phenol; Ionic liquid; Supported liquid membrane; Wastewater
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Funding
- University of Malaya
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This work evaluates the performance of ionic liquid in supported liquid membrane (SLM) for the removal of phenol from wastewater. Ionic liquids are organic salts entirely composed of organic cations and either organic or inorganic anions. Due to the fact that the vapor pressure of ionic liquid is not detectable and they are sparingly soluble in most conventional solvents, they can be applied in SLM as the organic phase. In this work, 1-n-alkyl-3-methylimidazolium salts, [CnMIM](+)[X](-) have been investigated so as to determine an optimal supported ionic liquid membrane. The effect of operational parameters such as pH, stirring speed and the concentration of stripping agent has been studied, and an evaluation of different membrane supports were also carried out. With a minimal amount of the ionic liquid 1-Butyl-3-methylimidazolium hydrogensulfate, 85% phenol removal could be achieved by using polytetrafluoroethylene hydrophobic membrane filter in the SLM. (C) 2011 Elsevier B.V. All rights reserved.
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