Article ID Journal Published Year Pages File Type
203465 Fluid Phase Equilibria 2007 9 Pages PDF
Abstract

A method based on interval analysis is presented for determining parameter values from mutual solubility data in two-parameter activity coefficient models for liquid–liquid equilibrium. The method is mathematically and computationally guaranteed to locate all sets of parameter values corresponding to stable phase equilibria. The technique is demonstrated with examples using the NRTL and electrolyte-NRTL (eNRTL) models. In two of the NRTL examples, results are found that contradict previous work. In the eNRTL examples, binary systems of an ionic liquid and an alcohol are considered. This appears to be the first time that a method for parameter estimation in the eNRTL model from binary LLE data (mutual solubility) has been presented.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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