"Although the field of liquid extraction is of increasing importance in today's chemical industry, the ternary-liquid data so necessary to the design and study of extraction operations are available in the literature only to a limited extent. During the twentieth century, approximately 120 ternary-liquid systems have been studied. However, limiting solubility data have been reported for approximately one-third of these systems, and about 30 per cent of the equilibria data reported for the remainder of these systems are incomplete or inaccurate.
Within limits, liquid equilibria data may be calculated for a ternary system from the properties of its constituents which are readily available in the literature. As binary equilibria data are comparatively plentiful in the literature, it is clearly desirable to predict the ternary-liquid characteristics from this media. The proper choice of computational method is as inherent to the accuracy of equilibria prediction as the accuracy of the binary data used, and the physical properties of the ternary system itself.
A number of methods have been proposed in the past decade which could be useful in predicting the equilibria curves for ternary-liquid systems. It was believed that a comparison of the ternary-liquid equilibria data predicted for several systems by certain of these methods, with the experimental equilibria data obtained from the literature, would result in the development of rules governing the use and applicability of these prediction methods. Consequently, certain major prediction methods were chosen for study. These were: (l) the van Laar method, (2) the Margules method, (3) the van Laar and Margules methods modified by the use of the Colburn constant, (4) the van Laar and Margules methods as modified by Wohl, and (5) the Scheibel and Friedland method.
The purpose of this investigation was to determine experimentally the ternary-liquid solubility and equilibria data for a previously unreported ternary-liquid system, and to compare these data, along with the equilibria data obtained from the literature, for other ternary systems with those data approximated by five major prediction methods. The system chosen for experimental study consisted of methanol, water, and 1-nitropropane. Experimental systems reported in the literature and chosen for study were: (1) ethanol, ethyl acetate, water; (2) acetone, benzene, water; (3) acetic acid, benzene, water; (4) acetone, chloroform, water; and (5) cyclohexane, aniline, N-heptane. The results of this study were the formulation of a set of rules concerning the choice and application of methods for predicting ternary-liquid equilibria data"--Introduction, pages 1-2.
Thompson, Dudley, 1913-1996
Planje, Theodore J., 1919-1980
Webb, William H.
Lee, Ralph E., 1921-2010
Chemical and Biochemical Engineering
M.S. in Chemical Engineering
Missouri School of Mines and Metallurgy
xiii, 146 pages
© 1962 Risdon William Hankinson, All rights reserved.
Thesis - Open Access
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Hankinson, Risdon William, "The experimental determination and prediction of ternary-liquid equilibria data" (1962). Masters Theses. 2723.