Salting-Out Effect of NaCl and KCl on the Liquid–Liquid Equilibrium of Water + 2-Methylpropanoic Acid + (1-Methylethyl)-benzene System at Several Temperatures
Abstract:The salting-out effect of NaCl and KCl on the liquid–liquid equilibrium (LLE) of the ternary system of {water (1) + 2-methylpropanoic acid (2) + (1-methylethyl)-benzene (3)}, a recommended system for liquid–liquid extraction investigations, was studied at temperatures of (288.15, 298.15, and 313.15) K. The generated data for salt-free system have been used to estimate the binary molecular interaction parameters for the nonrandom two-liquid (NRTL) activity coefficient model. Results show that this model reprodu… Show more
“…However, at high solute amounts (w 23 more than about 0.02), a higher distribution coefficient is achieved while the influence of temperature is also remarkable. Similar results have been previously reported for other chemical system of (cumene + isobutyric acid + water) [12].…”
Section: Tie-lines Distribution Coefficients and Separation Factorsupporting
confidence: 91%
“…The lower difference is for lower solute concentration. The procedure used in this work is based on utilizing the results of the direct analysis of components as well as the mass balance equation, as is conventionally used [2,12,13].…”
Section: Tie-lines Distribution Coefficients and Separation Factormentioning
confidence: 99%
“…The binary interaction parameters can be obtained from LLE data regression using Aspen Plus (Version 11.1). This software employs an objective function, called ''maximum likelihood'' and an algorithm, called ''Britt-Luecke'' to correlate model parameters [12]. The equation of UNIQUAC activity coefficient model is in fact sum of two terms: a combinatorial term and a residual term, represented as [19]:…”
Section: Models Application and Evaluationmentioning
“…However, at high solute amounts (w 23 more than about 0.02), a higher distribution coefficient is achieved while the influence of temperature is also remarkable. Similar results have been previously reported for other chemical system of (cumene + isobutyric acid + water) [12].…”
Section: Tie-lines Distribution Coefficients and Separation Factorsupporting
confidence: 91%
“…The lower difference is for lower solute concentration. The procedure used in this work is based on utilizing the results of the direct analysis of components as well as the mass balance equation, as is conventionally used [2,12,13].…”
Section: Tie-lines Distribution Coefficients and Separation Factormentioning
confidence: 99%
“…The binary interaction parameters can be obtained from LLE data regression using Aspen Plus (Version 11.1). This software employs an objective function, called ''maximum likelihood'' and an algorithm, called ''Britt-Luecke'' to correlate model parameters [12]. The equation of UNIQUAC activity coefficient model is in fact sum of two terms: a combinatorial term and a residual term, represented as [19]:…”
Section: Models Application and Evaluationmentioning
“…Results show that mass transfer coefficient decreases significantly in the presence of surfactants. Meantime, publications about salt effect on liquid-liquid equilibrium [11][12][13] are mostly focused on distribution coefficient of the polar and non-polar solutes which usually increases in the presence of salts. This is due to the effect termed as ''salting out''.Despite too many publications about salts effect on liquid-liquid equilibrium, reports about this effect on the liquid-liquid extraction rate in dispersed systems are scarce.…”
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