LIQUID-LIQUID EQUILIBRIUM IN MIXTURES CONTAINING PROPANE-1,2,3-TRIOL AND MIXTURES CONTAINING VEGETABLE OILS AT ATMOSPHERIC PRESSURE

ALFONSINA E. ANDREATTA; ANDRÉS ARPOSIO

JOURNAL OF CHEMICAL AND ENGINEERING DATA

AMER CHEMICAL SOC

Lugar: Washington; Año: 2014 vol. 59 p. 2773 - 2780

0021-9568

Mutual solubility of propane-1,2,3-triol with pentane, hexane, heptane, or ethyl acetate and mutual solubility between different vegetable oils (sunflower, soybean, corn and olive oil) with methanol or ethanol have been reported at temperatures ranging from 298.2 K 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, 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-1,2,3-triol in the ternary mixture of ethyl acetate + methanol or ethanol + propane-1,2,3-triol 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.