| Abstract
| - Liquid−liquid equilibria of the quaternary system of methyl oleate, glycerol, hexane, and methanol wereexperimentally quantified at room temperature and atmospheric pressure. UNIFAC and Modified UNIFACactivity coefficient models were used to predict the properties of the coexisting phases at equilibrium. Thesemodels used the previously reported binary group interaction parameters without any regression. Overall, thepredicted tielines showed no significant lack of fit when compared to the experimental tielines for both models;however, the precision of the experimental data was insufficient to verify achievement of the ASTM standardfor the glycerol content of the methyl oleate-rich phase. Nevertheless, the hexane−methanol solvent systemshowed potential to achieve the required separation.
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