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

共 31 条

[1] STATISTICAL THERMODYNAMICS OF LIQUID-MIXTURES - NEW EXPRESSION FOR EXCESS GIBBS ENERGY OF PARTLY OR COMPLETELY MISCIBLE SYSTEMS [J].

ABRAMS, DS ;

PRAUSNITZ, JM .

AICHE JOURNAL, 1975, 21 (01) :116-128

[2] A SEGMENT-BASED LOCAL COMPOSITION MODEL FOR THE GIBBS ENERGY OF POLYMER-SOLUTIONS [J].

CHEN, CC .

FLUID PHASE EQUILIBRIA, 1993, 83 :301-312

[3] A LOCAL COMPOSITION MODEL FOR THE EXCESS GIBBS ENERGY OF AQUEOUS-ELECTROLYTE SYSTEMS [J].

CHEN, CC ;

EVANS, LB .

AICHE JOURNAL, 1986, 32 (03) :444-454

[4]

Claros M., UNPUB

[5] Calorimetric investigation of the formation of aqueous two-phase systems in ternary mixtures of water, poly(ethylene oxide) and electrolytes (or dextran) [J].

da Silva, LHM ;

Loh, W .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (43) :10069-10073

[6] The solution behavior of poly(vinylpyrrolidone): Its clouding in salt solution, solvation by water and isopropanol, and interaction with sodium dodecyl sulfate [J].

Dan, Abhijit ;

Ghosh, Soumen ;

Moulik, Satya P. .

JOURNAL OF PHYSICAL CHEMISTRY B, 2008, 112 (12) :3617-3624

[7] Equilibrium data of the biphasic system poly(ethylene oxide) 4000 plus copper sulfate plus water at (5, 10, 35, and 45) °C [J].

de Oliveira, Rosana Moura ;

dos Reis Coimbra, Jane Selia ;

Francisco, Kelly Roberta ;

Minim, Luis Antonio ;

Mendes da Silva, Luis Henrique ;

Garcia Rojas, Edwin Elard .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2008, 53 (07) :1571-1573

[8] Ionic liquids for aqueous two-phase extraction and stabilization of enzymes [J].

Dreyer, Susanne ;

Kragl, Udo .

BIOTECHNOLOGY AND BIOENGINEERING, 2008, 99 (06) :1416-1424

[9] Thermodynamics of high polymer solutions [J].

Flory, PJ .

JOURNAL OF CHEMICAL PHYSICS, 1942, 10 (01) :51-61

[10] GROUP-CONTRIBUTION ESTIMATION OF ACTIVITY-COEFFICIENTS IN NONIDEAL LIQUID-MIXTURES [J].

FREDENSLUND, A ;

JONES, RL ;

PRAUSNITZ, JM .

AICHE JOURNAL, 1975, 21 (06) :1086-1099

← 1 2 3 4 →