Salt effect on aqueous two-phase system composed of nonylphenyl ethoxylate non-ionic surfactant

被引：23

作者：

Salabat, Alireza ^{[1
]}

Alinoori, Maryam ^{[1
]}

机构：

[1] Arak Univ, Dept Chem, Arak, Iran

来源：

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2008年 / 32卷 / 04期

关键词：

Aqueous two-phase system; Non-ionic surfactant; Nonylphenyl ethoxylate; Salt effect; Phase diagram correlation;

D O I：

10.1016/j.calphad.2008.06.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Phase diagrams of detergent-based aqueous two-phase systems composed of nonylphenyl ethoxylate (4-C(9)H(19)C(6)H(4)(OCH(2)CH(2))(9)OH, NP-9) non-ionic surfactant and various salt solutions were studied experimentally at 298.15 K. The salts used were magnesium sulfate, sodium sulfate and sodium chloride. The salting-out power of salts in these systems were determined and this power can be arranged with respect to the cations as Mg(2+) > Na(+) and anions as SO(4)(2-) > CI(-). The experimental results of the phase diagrams were correlated using DH-NRTL model. It was found that, this model represent the experimental liquid-liquid equilibrium data of the surfactant aqueous two-phase systems with good accuracy. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：611 / 614

页数：4

共 12 条

[1]

Albertsson P.A., 1986, PARTITION CELL PARTI

[2]

[Anonymous], 2000, AQUEOUS 2 PHASE SYST

[3]

Fowler R., 1956, Statistical Thermodynamics, V2nd

[4]

GREVE A, 1991, J CHEM TECHNOL BIOT, V50, P27