Thermodynamics of ammonium sulfate-polyethylene glycol aqueous two phase system

被引：0

作者：

Gao, Yunlong ^{[1
]}

Li, Zongcheng ^{[1
]}

Li, Yigui ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing, China

来源：

Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 1990年 / 4卷 / 04期

关键词：

Ammonium Compounds - Mathematical Models - Polymers - Sulfur Compounds - Thermodynamics;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The quantitative analysis method for the study on liquid-liquid equilibria (LLE) of ammonium sulfate-polyethylene glycol (PEG) aqueous two-phase ternary system was established. LLE together with critical point data of four series of experiments composed of different molecular weight of PEG (1000, 1540, 2000 and 4000) at 25°C were determined. The modified UNIQUAC and UNIFAC equations, combined with the Fowler-Guggenheim equation, are proposed for the correlation of LLE data. The calculated concentration values are in good agreement with the experimental ones. The modified UNIFAC equation has the predictability for the (NH4)2SO4-PEG-H2O system.

引用

页码：291 / 301