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

Faculty of Technology, University of Novi Sad, Varadinum Petri, Vojvodina, Serbia
Journal of the American Oil Chemists' Society (Impact Factor: 1.54). 06/2007; 84(7):669-674. DOI: 10.1007/s11746-007-1079-8


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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    • "Rangarajan et al. determined experimentally the partition coefficient for acetic acid in a soybean oil-acetic acid-water system at 313 and 333 K [3]. On the basis of experimental data for the liquidliquid equilibrium constant for acetic acid, Sinadinović-Fišer and Janković calculated the partition coefficient for acetic acid in the soybean oil-acetic acid-water system at temperature range of 293-353 K [7]. Campanella et al. determined the partition coefficient for formic acid/acetic acid in the soybean oil-formic acid/acetic acid-water system at 313 K [8]. "

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