Analysis of Partition Coefficients of Ternary Liquid-Liquid Equilibrium Systems and Finding Consistency Using Uniquac Model

Open access

Analysis of Partition Coefficients of Ternary Liquid-Liquid Equilibrium Systems and Finding Consistency Using Uniquac Model

The objective of this study is to investigate the change in partition coefficient with a change in the concentration of the solute in a liquid system consisting of two relatively immiscible solvents. To investigate the changes in the partition coefficients, the data of the partition coefficients at infinite dilution and the ternary Liquid-Liquid Equilibrium (LLE) data at finite concentrations of the solute should be consistent. In this study, 29 ternary systems that are found in literature and for which the partition coefficients at infinite dilution and the ternary LLE data cannot be predicted accurately by the universal quasi-chemical (UNIQUAC) model are identified. On the basis of this model, some consistent and inconsistent ternary systems are introduced. Three inconsistent systems, namely hexane-butanol-water, CCl4 (carbon tetrachloride)-PA (propanoic acid)-water, and hexane-PA-water, are chosen for detailed analysis in this study. The UNIQUAC activity coefficient model is used to represent these data over a range of concentrations. The results show large errors, exhibiting the inability of this model to correlate the data. Furthermore, some ternary systems in which cross behavior of solutes between two phases observed are identified.

Abrams D.S., Prausnitz J.M., 1975. Statistical thermodynamics of liquid mixtures: A new expression for the excess Gibbs energy of partly or completely miscible systems. AIChE J., 21, 116-121. DOI: 10.1002/aic.690210115.

Anderson T.F., Prausnitz J.M., 1978. Application of the UNIQUAC equation to calculation of multicomponent phase equilibria. 2. Liquid-liquid equilibria. Ind. Eng. Chem. Process Des. Dev., 17, 561-567. DOI: 10.1021/i260068a029.

Hansch C., Leo A., 1979. Substituent constants for correlation analysis in chemistry and biology, Wiley-Interscience, New York, 233-319.

Javvadi A., 2000. Partitioning of higher alcohols in alkane-water at dilute concentrations, MS thesis, Department of Chemical Engineering, North Carolina A&T State University.

Islam A.W., Javvadi A., Kabadi V.N., 2011. Universal liquid mixture models for vapor-liquid and liquid-liquid equilibria in the hexane-butanol-water system. Ind. Eng. Chem. Res., 2011, 50, 1034-1045. DOI: 10.1021/ie902028y.

Islam A.W., Javvadi A., Kabadi V.N., 2011. Universal liquid mixture models for vapor-liquid and liquid-liquid equilibria in the hexane-butanol-water system over the temperature range 10-100 °C. Chem. Process Eng., 2011, 32, 101-115. DOI: 10.2478/v10176-011-0009-3.

Macedo E.A., Rasmussen P., 1987. Liquid-liquid equilibrium data collection, DECHEMA Chemistry Data Ser., vol 5, part 4, Frankfurt am Main, Germany.

Prausnitz J.M., Lichtenthaler R.N., Azevedo E.G., 1999. Molecular thermodynamics for fluid phase equilibria, Third Edition, Prentice Hall International Series in the Physical and Chemical Engineering Sciences, 279-294.

Renon H., Prausnitz J. M., 1968. Local compositions in thermodynamic compositions for liquid mixtures. AIChE J., 14, 135-144. DOI: 10.1002/aic.690140124.

Mackay D., Shiu W.Y., Ma K.C., 1991a. Illustrated handbook of physical-chemical properties and environmental fate for organic chemicals, Vol. 1, Lewis Publishers, Michigan.

Mackay D., Shiu W.Y., Ma K.C., 1991b. Illustrated handbook of physical-chemical properties and environmental fate for organic chemicals, Vol. 3, Lewis Publishers, Michigan.

Nagata I., Katoh K., 1981. Effective UNIQUAC equation in phase equilibria calculation. Fluid Phase Equilib., 5, 225-244.

Rizvi S.Z., 2003. Measurement of liquid-liquid equilibrium and infinite dilution partition coefficients data for two non-ideal systems, MS thesis, Department of Chemical Engineering, North Carolina A&T State University.

Sorensen J.M., Arlt W., 1979. Liquid-liquid equilibrium data collection, DECHEMA Chemistry Data Ser., Vol. 5, Part 1, Frankfurt am main, Germany.

Sorensen J.M., Arlt W., 1980a. Liquid-liquid equilibrium data collection, DECHEMA Chemistry Data Ser., Vol. 5, Part 2, Frankfurt am Main, Germany.

Sorensen J.M., Arlt, W. 1980b. Liquid-liquid equilibrium data collection, DECHEMA Chemistry Data Ser., Vol 5, Part 3, Frankfurt am Main, Germany.

Chemical and Process Engineering

The Journal of Committee of Chemical and Process of Polish Academy of Sciences

Journal Information


IMPACT FACTOR 2016: 0.971

CiteScore 2016: 1.03

SCImago Journal Rank (SJR) 2016: 0.395
Source Normalized Impact per Paper (SNIP) 2016: 0.873

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 99 99 19
PDF Downloads 21 21 5