Liquid–Liquid Equilibrium in Mixtures Containing Propane-1,2,3-triol and Mixtures Containing Vegetable Oils at Atmospheric Pressure

Abstract

Mutual solubility of propane-1,2,3-triol with pentane, hexane, heptane, or ethyl acetate and mutual solubility between different vegetable oils (sunflower oil, soybean oil, corn oil, and olive oil) with methanol or ethanol have been reported at temperatures ranging from (298.2 to 348.2) K and atmospheric pressure. Furthermore, the binodal curves for ethyl acetate + methanol or ethanol + propane-1,2,3-triol at (303.2, 313.2, and 323.2) K have been explored. A higher solubility has been found in the system containing ethanol than the system containing methanol. The GCA-EoS model has been used to represent these mixtures. The distribution coefficient of alcohol and the selectivity of propane-1,2,3triol in the ternary mixture of ethyl acetate + methanol or ethanol + propane-1,2,3triol have been evaluated by GCA-EoS model. These results indicate a more effective use of propane-1,2,3-triol as separation agent by liquid−liquid extraction in the binary mixture of ethyl acetate + methanol than ethyl acetate + ethanol. On the other hand, regarding the mixtures containing vegetable oil, the mutual solubility of alcohol in the phase rich in vegetable oil is bigger than the mutual solubility of vegetable oil in the phase rich in alcohol.

Measurement and Correlation of Liquid–Liquid Equilibrium Data for the Extraction of Glycerol Carbonate from Glycerol Using Ethyl Acetate and 2-Butanone + Benzene Mixture

“…As shown in Figure , the solubility of glycerol in ethyl acetate is quite low, which is advantageous for extraction. The measured mutual solubilities of glycerol with ethyl acetate at 303.2 K are consistent with the previous report as revealed in Figure a . The addition of glycerol carbonate promotes the homogenization of glycerol with ethyl acetate.…”

“…Comparison of LLE data with literature results for the binary pairs (a) G-EA and (b) G-MEK. Results from Andreatta et al, Katayama et al, and McEwen are depicted using different markers as indicated in the legend.…”

“…The measured mutual solubilities of glycerol with ethyl acetate at 303.2 K are consistent with the previous report as revealed in Figure 3a. 30 The addition of glycerol carbonate promotes the homogenization of glycerol with ethyl acetate. It can be concluded from the inclination of the tie lines that glycerol carbonate prefers to The purity was confirmed by gas chromatography.…”