Aqueous two-phase systems of poly(vinylpyrrolidone) and potassium citrate at different temperatures—Experimental results and modeling of liquid–liquid equilibrium data

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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Aqueous two-phase systems of polyoxyethylene lauryl ether and potassium gluconate/potassium oxalate/potassium citrate at different temperature-experimental results and modeling of (liquid+liquid) equilibrium data

The Journal of Chemical Thermodynamics ◽

10.1016/j.jct.2013.12.005 ◽

2014 ◽

Vol 71 ◽

pp. 137-147 ◽

Cited By ~ 14

Author(s):

Yang Lu ◽

Tongfan Hao ◽

Yan Zhou ◽

Juan Han ◽

Zhenjiang Tan ◽

...

Keyword(s):

Potassium Citrate ◽

Potassium Oxalate ◽

Liquid Equilibrium ◽

Two Phase ◽

Potassium Gluconate ◽

Lauryl Ether ◽

Equilibrium Data ◽

Aqueous Two Phase Systems ◽

Polyoxyethylene Lauryl Ether ◽

Phase Systems

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

Journal of Chemical & Engineering Data ◽

10.1021/je1006532 ◽

2011 ◽

Vol 56 (2) ◽

pp. 190-194 ◽

Cited By ~ 15

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

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Measurement and correlation of phase equilibria in aqueous two-phase systems containing ionic liquid ([EOMiM]Br) and potassium citrate/ammonium citrate/potassium tartrate at different temperatures

Korean Journal of Chemical Engineering ◽

10.1007/s11814-019-0439-z ◽

2020 ◽

Vol 37 (2) ◽

pp. 332-340 ◽

Cited By ~ 1

Author(s):

Dongdong Wang ◽

Yang Lu ◽

Zhuo Sun ◽

Wei Liang ◽

Dongshu Sun ◽

...

Keyword(s):

Ionic Liquid ◽

Phase Equilibria ◽

Potassium Citrate ◽

Ammonium Citrate ◽

Two Phase ◽

Potassium Tartrate ◽

Different Temperatures ◽

Aqueous Two Phase Systems ◽

Phase Systems

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Liquid-Liquid Equilibrium Data for the Ionic Liquid N-Ethyl-Pyridinium Bromide with Several Sodium Salts and Potassium Salts

Journal of Chemistry ◽

10.1155/2013/857272 ◽

2013 ◽

Vol 2013 ◽

pp. 1-11 ◽

Cited By ~ 2

Author(s):

Yuliang Li ◽

Xiaojia Lu ◽

Jing Hao ◽

Changquan Chen

Keyword(s):

Correlation Coefficients ◽

Liquid Equilibrium ◽

Two Phase ◽

Salting Out ◽

Pyridinium Bromide ◽

Equilibrium Data ◽

Aqueous Two Phase Systems ◽

Phase Systems ◽

Lle Data ◽

Tie Line

The liquid-liquid equilibrium (LLE) data for systems containing N-ethyl-pyridinium bromide ([EPy]Br), salt (Na2HPO4,K2HPO4,K2SO4,C4O6H4KNa), and water have been measured experimentally atT=298.15 K and the formations of these four aqueous two-phase systems (ATPSs) have been discussed. Also, the effective excluded volume (EEV) values obtained from the binodal models for the four systems were determined and the salting-out abilities of different salts follow the order ofK2SO4>K2HPO4>Na2HPO4>C4O6H4KNa. The solubility data were correlated by the Merchuk and other equations while the tie-line data by the Othmer-Tobias, Bancroft, two-parameter, and Setschenow-type equations. The correlation coefficients evidenced that experimental data fitted well to all these equations. These four salts were proved successfully to form ATPSs with N-ethyl-pyridinium bromide, making a significant contribution to the further study of this kind of ATPS.

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