scholarly journals Liquid-Liquid Equilibrium Data, Viscosities, Densities, Conductivities, and Refractive Indexes of Poly (vinyl pyrrolidone)+ tri-sodium Citrate + Urea Aqueous Two-Phase Systems at Different pH

2017 ◽  
Vol 34 (3) ◽  
pp. 911-918
Author(s):  
Mohsen Pirdashti ◽  
Kamyar Movagharnejad ◽  
Abbas Ali Rostami
2011 ◽  
Vol 56 (2) ◽  
pp. 190-194 ◽  
Author(s):  
Kelany S. Nascimento ◽  
Sonia Yelo ◽  
Benildo S. Cavada ◽  
Ana M. Azevedo ◽  
Maria R. Aires-Barros

2013 ◽  
Vol 58 (7) ◽  
pp. 2008-2017 ◽  
Author(s):  
Evaldo Cardozo de Souza ◽  
Renata Silva Diniz ◽  
Jane Sélia dos Reis Coimbra ◽  
Maurício de Oliveira Leite ◽  
Geormenny Rocha dos Santos ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Yuliang Li ◽  
Xiaojia Lu ◽  
Jing Hao ◽  
Changquan Chen

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.


2009 ◽  
Vol 65 (1) ◽  
pp. 3-8 ◽  
Author(s):  
Gisela Tubio ◽  
Bibiana B. Nerli ◽  
Guillermo A. Picó ◽  
Armando Venâncio ◽  
José Teixeira

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