The Influence Of Cation And Temperature On The Liquid-Liquid Equilibrium Of Water+2-Butanone System And Its Simulation Using Artificial Intelligent-Based Models

The liquid-liquid equilibrium (LLE) data of the binary 2-butanone/water and ternary 2-butanone/water/salt systems was measured at 298.15 and 303.15 K under 101.1 kPa. The dissolved salts studied in this work were KCl, NaCl, LiCl, CaCl2, and MgCl2. For the binary mixture 2-butanone /water, the mutual solubility was measured and compared to those reported data. Through LLE data of the ternary mixtures water/salt/2-butanone, the effect of cation type, and temperature on the LLE data were studied. It was found that the addition of dissolved salts decreases the solubility of 2-butanone in the aqueous phase (i.e., salting-out) for the investigated systems. In addition, no apparent effect of temperature on the LLE data. Furthermore, the influence of the cations on the salting-out efficiency decreases in the following order: Mg2+ > Ca2+ > Li+ > Na+ > K+ in two tempera tures. The linearity of the Setschenow equation was used to study the salting-out effect of salts, and has confirmed its order. The experimental data have been correlated using an artificial neural network (ANN) and a modified extended-UNIQUAC model. Both models correlate the LLE data but the ANN outperformed the modified extended-UNIQUAC model obtaining low modeling errors.