Liquid-liquid equilibria of aqueous two-phase systems containing polyethylene glycol 4000 and di-potassium tartrate, potassium sodium tartrate, or di-potassium oxalate: Experiment and correlation

被引：54
|
作者：
Zafarani-Moattar, Mohammed Taghi [1 ]
Tolouei, Shahram [1 ]
机构：
[1] Univ Tabriz, Dept Phys Chem, Fac Chem, Tabriz, Iran
来源：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2008年 / 32卷 / 04期
关键词：
Liquid-liquid equilibrium; Polyethylene glycol; Di-potassium tartrate; Di-potassium oxalate; Extended NRTL model;
D O I：
10.1016/j.calphad.2008.09.006
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Phase diagrams and liquid-liquid equilibrium (LLE) data of aqueous polyethylene glycol 4000 (PEG(4000)) + di-potassium tartrate or potassium sodium tartrate and aqueous PEG(4000) + di-potassium oxalate systems have been determined experimentally at 298.15 K. Furthermore, the Merchuk equation was used to correlate the binodal data; Othmer-Tobias and Bancraft, Setschenow and extended NRTL equations were used to fit the tie-line data of these systems. Finally, the effects of the type of salt on LLE are discussed. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：655 / 660
页数：6
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