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|Title:||Liquid-liquid equilibria of water/1-propanol/methyl ethyl ketone/potassium chloride||Authors:||Tan, T.C.
Water/1-propanol/methyl ethyl ketone/KCl
|Issue Date:||1-Nov-2001||Citation:||Tan, T.C., Kannangara, K.K.D.D.S. (2001-11-01). Liquid-liquid equilibria of water/1-propanol/methyl ethyl ketone/potassium chloride. Fluid Phase Equilibria 190 (1-2) : 179-189. ScholarBank@NUS Repository.||Abstract:||The liquid-liquid equilibrium of water/1-propanol/methyl ethyl ketone (MEK) at 25°C was significantly modified by the presence of dissolved potassium chloride. Water is salted out of the organic phase while MEK is more preferentially salted out of the aqueous phase than 1-propanol. These results in considerable enlargement of the two-phase region and enhancement of the extractive efficiency of MEK for the separation of 1-propanol from its aqueous mixture. Good correlation of the liquid-liquid equilibria (LLE) of the system in the presence of potassium chloride up to saturation was obtained with Tan's modified NRTL phase model for multicomponent solute-solvent mixtures with the solute-solvent interaction parameters expressed as a third-order polynomial function in salt concentration. Similar to the observation reported for vapour-liquid equilibrium (VLE) of solvent-solute mixtures, salting-in and salting-out of the solvent components from the respective phases can be predicted according to the relative solute-solvent interaction parameters of the solvent components in the two phases. © 2001 Elsevier Science B.V. All right reserved.||Source Title:||Fluid Phase Equilibria||URI:||http://scholarbank.nus.edu.sg/handle/10635/92087||ISSN:||03783812|
|Appears in Collections:||Staff Publications|
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