Modification of the Extended UNIQUAC Model to Study the Phase Behavior of the [Bmim]Cl-K2HPO4 Aqueous Two Phase System at 298.15 K

被引：4

作者：

Guo, Bangchen ^{[1
]}

Chen, Li ^{[1
]}

Liu, Yi ^{[1
]}

Yan, Zongcheng ^{[1
]}

机构：

[1] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF SOLUTION CHEMISTRY | 2017年 / 46卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Aqueous two phase system; Ionic liquid; Salt; Extended UNIQUAC; Modified; Liquid-liquid equilibria; LIQUID-LIQUID EQUILIBRIA; IONIC LIQUIDS; BIPHASIC SYSTEMS; SALT SYSTEMS; EQUATION; PREDICTION; THERMODYNAMICS; EXTRACTION;

D O I：

10.1007/s10953-017-0622-y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Aqueous two phase systems (ATPS), consisting of two incompatible aqueous solutions, are widely used in biological extraction. In recent years, many experimental studies on the phase behavior of ionic liquid(IL)-inorganic salt ATPS systems have been reported but few investigations of the thermodynamics of the IL-based ATPS have been reported. In this work, the Extended UNIQUAC model is modified to calculate the equilibrium of [Bmim]Cl-K2HPO4-H2O ATPS at 298.15 K. All the interaction parameters of the model are salt specific. The results show that the experimental compositions of tie lines are correlated successfully using the proposed model. The root mean square deviation of the mass fraction is 0.0256.

引用

页码：1059 / 1067

页数：9

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