Prediction of the Partition Coefficient for Acetic Acid in a Two-Phase System Soybean Oil-Water

Journal of Oil & Fat Industries (Impact Factor: 1.62). 06/2007; 84(7):669-674. DOI: 10.1007/s11746-007-1079-8

ABSTRACT An analytical approach for the prediction of the partition coefficient for acetic acid between soybean oil and water, dependent
on temperature and composition, has been proposed. The original and three modified UNIFAC models as well as the UNIQUAC model
were used to represent the liquid–liquid equilibrium data in the ternary system. To calculate the density of the water and
oil phase the COSTALD method was applied. The proposed approach for the prediction of the partition coefficient for acetic
acid fit the experimental data well when the UNIQUAC model was used. The results of the application of the proposed approach
to the experimental data for acetic acid partition coefficient taken from the literature were also presented and discussed.

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