Liquid-liquid equilibrium of the CuSO4 + PEG 4000+H2O system at different temperatures

被引：26

作者：

Claros, Martha ^{[1
]}

Elisa Taboada, Maria ^{[1
]}

Galleguillos, Hector R. ^{[1
]}

Jimenez, Yecid P. ^{[1
]}

机构：

[1] Univ Antofagasta, Dept Chem & Mineral Proc Engn, Antofagasta, Chile

来源：

FLUID PHASE EQUILIBRIA | 2014年 / 363卷

关键词：

Aqueous two-phase system; Liquid-liquid equilibrium; Polyethylene glycol; Copper sulfate; AQUEOUS 2-PHASE SYSTEMS; LOCAL COMPOSITION MODEL; METAL-ION SEPARATIONS; EXCESS GIBBS ENERGY; POLYETHYLENE-GLYCOL; BIPHASIC SYSTEMS; POLY(ETHYLENE OXIDE); POLYMER-SOLUTIONS; PLUS WATER; THERMODYNAMICS;

D O I：

10.1016/j.fluid.2013.11.038

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Phase diagram and liquid-liquid equilibrium (LLE) data for the CuSO4 + polyethylene glycol 4000 (PEG 4000) + H2O system were determined experimentally at T=288.15, 298.15 and 308.15 K. The effect of temperature on the binodal curves and tie-lines was studied and it was found that an increasing in temperature caused the expansion of two-phase region. The Chen-NRTL and modified Wilson models were used to correlate the experimental tie-line data. The results show that the quality of fitting is better with the modified Wilson model. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：199 / 206

页数：8

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