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 aqueous two-phase systems composed of poly(ethylene oxide) 1500 and different electrolytes ((NH4)2SO4, ZnSO4 and K2HPO4): Experimental and correlation

2011 ◽  
Vol 305 (1) ◽  
pp. 19-24 ◽  
Author(s):  
Leandro Rodrigues de Lemos ◽  
Pamela da Rocha Patrício ◽  
Guilherme Dias Rodrigues ◽  
Raquel Moreira Maduro de Carvalho ◽  
Maria C. Hespanhol da Silva ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Liquid Equilibrium ◽  
Two Phase ◽  
Aqueous Two Phase Systems ◽  
Poly Ethylene Oxide ◽  
Phase Systems ◽  
Poly Ethylene

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

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
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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