Liquid-liquid equilibria of an aqueous two-phase system containing polyethylene glycol and sodium citrate: experiment and correlation

被引：112
作者：
Zafarani-Moattar, MT [1 ]
Sadeghi, R [1 ]
Hamidi, AA [1 ]
机构：
[1] Univ Tabriz, Dept Chem Phys, Tabriz, Iran
来源：
FLUID PHASE EQUILIBRIA | 2004年 / 219卷 / 02期
关键词：
liquid-liquid equilibria; polyethylene glycol; sodium citrate; osmotic virial equation; UNIQUAC;
D O I：
10.1016/j.fluid.2004.01.028
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Liquid-liquid equilibria were determined for the PEG(6000)-sodium citrate-H2O system at 298.15, 308.15 and 318.15 K. Furthermore, the osmotic virial and the UNIQUAC equations with temperature-dependent parameters and with or without Debye-Hockel term were used to correlate the phase behavior of this system. Better quality of fitting of the LLE data was obtained with the virial model than the model of UNIQUAC. Finally, the effect of temperature on the liquid-liquid equilibria is studied. (C) 2004 Elsevier B.V. All rights reserved.
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页码：149 / 155
页数：7
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