(Liquid plus Liquid) Equilibrium Experiment and Thermodynamic Modeling of Water plus o-Cresol plus Solvents (Mesityl Oxide or n-Propyl Acetate) at 303.2, 313.2, and 323.2 K under 101.3 kPa

In this work, the liquid-liquid equilibrium (LLE) data of the ternary mixtures of water + o-cresol + solvents (mesityl oxide or n-propyl acetate) were measured at 303.2, 313.2, and 323.2 K under 101.3 kPa. The distribution coefficients (D) and separation factors (S) were used to evaluate the effect of extracting o-cresol from water, and the high D and S values indicated that the two solvents are promising. At the same time, the NRTL and UNIQUAC models were used to correlate experimental data and obtain regression parameters with the root-mean-square (RMSD) values less than 0.50%. In addition, the GUI-MATLAB tool was used to verify the good reliability of the regression parameters.