Calculation of liquid-liquid equilibrium in polymer electrolyte solutions using PHSC-electrolyte equation of state

被引：11

作者：

Valavi, Masood ^{[1
]}

Dehghani, Mohammad Reza ^{[1
]}

Feyzi, Farzaneh ^{[1
]}

机构：

[1] Iran Univ Sci & Technol, Sch Chem Engn, Thermodynam Res Lab, Tehran 1684613114, Iran

来源：

FLUID PHASE EQUILIBRIA | 2013年 / 341卷

关键词：

PHSC EOS; Polymer; ATPS; Electrolyte; AQUEOUS 2-PHASE SYSTEMS; CITRATE PLUS WATER; BINARY COPOLYMER SYSTEMS; POLY(ETHYLENE GLYCOL); POLYETHYLENE-GLYCOL; SODIUM-CITRATE; THERMODYNAMIC PROPERTIES; HYDROGEN PHOSPHATE; PHASE-EQUILIBRIUM; DIHYDROGEN PHOSPHATE;

D O I：

10.1016/j.fluid.2012.12.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this work, the capability of the Perturbed Hard Sphere Chain (PHSC) equation of state (EOS) in liquid-liquid equilibrium calculations of salt-polyethylene glycol (PEG)-water systems is investigated. In order to present a comprehensive model, association as well as electrostatic contributions have been added to the original PHSC EOS. In this work 47 systems including PEG (with different molecular weights) and various salts have been modeled at different temperatures. Only two adjustable parameters between salt and PEG and between water and PEG have been employed. Good agreement between experimental data and calculation results is observed. Overall average deviation for all of the systems considered is 6.81%. This study shows that the PHSC EOS can be employed for correlation of phase behavior in aqueous two phase systems. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：96 / 104

页数：9

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