Liquid–liquid equilibrium of aqueous two-phase systems containing poly(propylene glycol) and salt ((NH4)2SO4, MgSO4, KCl, and KAc): experiment and correlation

2011 ◽  
Vol 516 (1-2) ◽  
pp. 46-51 ◽  
Author(s):  
Xiaohong Zhao ◽  
Xueqiao Xie ◽  
Yongsheng Yan
Keyword(s):  
Propylene Glycol ◽  
Liquid Equilibrium ◽  
Two Phase ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Poly Propylene

Liquid−Liquid Equilibrium Data for Aqueous Two-Phase Systems Composed of Ethylene Oxide Propylene Oxide Copolymers

2011 ◽  
Vol 56 (2) ◽  
pp. 190-194 ◽  
Author(s):  
Kelany S. Nascimento ◽  
Sonia Yelo ◽  
Benildo S. Cavada ◽  
Ana M. Azevedo ◽  
Maria R. Aires-Barros
Keyword(s):  
Ethylene Oxide ◽  
Propylene Oxide ◽  
Liquid Equilibrium ◽  
Two Phase ◽  
Equilibrium Data ◽  
Aqueous Two Phase Systems ◽  
Phase Systems

scholarly journals Liquid-liquid equilibrium of novel aqueous two-phase systems and evaluation of salting-out abilities of salts

2010 ◽  
Vol 8 (4) ◽  
pp. 886-891 ◽  
Author(s):  
Yun Wang ◽  
Jing Wang ◽  
Juan Han ◽  
Shiping Hu ◽  
Yongsheng Yan
Keyword(s):  
Water Systems ◽  
Organic Salt ◽  
Excluded Volume ◽  
Statistical Geometry ◽  
Liquid Equilibrium ◽  
Two Phase ◽  
Salting Out ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Aqueous Two Phase Extraction

AbstractBinodal data are beneficial to the design of aqueous two-phase extraction and the establishment of thermodynamic models. For the 2-propanol + Li2SO4/Na2SO4/ (NH4)2SO4/K3PO4 + water systems and 1-propanol + K3PO4/K3C6H5O7/(NH4)3C6H5O7 + water systems, binodal data were determined at 298.15 K. The binodal data were correlated by a theoretical equation on the basis of statistical geometry. The salting-out abilities of salts and the phase-separation abilities of alcohols were evaluated by the effective excluded volume of salt and the binodal curves plotted in molality. A simple Hofmeister series of cations and anions were obtained. The organic salt, K3C6H5O7, shows as high a salting-out ability as K3PO4.

Liquid-Liquid Equilibria for Acetone + Several Citrates Aqueous Two-Phase Systems at Different Temperatures

2012 ◽  
Vol 549 ◽  
pp. 30-35
Author(s):  
Shi Ping Hu ◽  
Juan Han ◽  
Yong Sheng Yan ◽  
Yu Tao Hu
Keyword(s):  
Ternary Systems ◽  
Data Fitting ◽  
Potassium Citrate ◽  
Liquid Equilibrium ◽  
Two Phase ◽  
Different Temperatures ◽  
Tie Lines ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Tie Line

Liquid-liquid equilibria for the three kinds of the ternary systems acetone + ammonium, sodium or potassium citrate + water have been determined at T= (273.15, 283.15, and 298.15) K. Binodal curves, tie-lines, and integrated phase diagrams for the ternary systems are given. The data of the experimental bimodal curve are described with a four-parameter equation. The result also shows the temperature has little influence on the liquid-liquid equilibrium within the investigated range. The tie-line data calculated according to the bimodal data fitting equation and the lever arm rule were satisfactorily described by using the Othmer-Tobias and Bancroft equations, and the result conform the reliability of the calculation method and corresponding tie-line data.

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