Salting effect of NaCl and KCl on the liquid–liquid equilibria of water + ethyl acetate + ethanol system and interaction parameters estimation using the genetic algorithm

Abstract

Salting effect of NaCl and KCl on the liquid-liquid equilibria (LLE) of water-ethyl acetate-ethanol system was investigated experimentally at 293.15 K and 1 atm. The salt mass percentages considered were 5 and 10%. The results show that the two electrolytes significantly affected the solubility of the solute in the organic phase, since its distribution coefficient increased with rising amount of electrolyte, causing a salting-out effect which was more pronounced for NaCl than for KCl and could be particularly useful to eliminate solutropy. Interaction parameters for an extended version of the UNIQUAC model were retrieved from the obtained experimental results by means of a combination of the Levenberg-Marquardt and the genetic algorithms.

Determination of Ternary Systems Bisphenol A-Water-Organic Solvent Interaction Parameters by Genetic Algorithm Approach

“…The population size must be chosen to achieve a good compromise between the calculation time and the quality of the result. A population size varying between 80 and 100 is reasonable [21,22].…”