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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Veloso, Anne C. G. | |
dc.contributor.author | Patrício, amela R. | |
dc.contributor.author | Quintão, Juan C. | |
dc.contributor.author | Carvalho, Raquel M. M. de | |
dc.contributor.author | Silva, Luis H. M. da | |
dc.contributor.author | Hespanhol, Maria C. | |
dc.date.accessioned | 2018-09-11T19:38:56Z | |
dc.date.available | 2018-09-11T19:38:56Z | |
dc.date.issued | 2018-08-15 | |
dc.identifier.issn | 03783812 | |
dc.identifier.uri | https://doi.org/10.1016/j.fluid.2018.04.017 | |
dc.identifier.uri | http://www.locus.ufv.br/handle/123456789/21771 | |
dc.description.abstract | Liquid-liquid equilibrium data of aqueous two-phase systems (ATPS) composed by L35 triblock copolymer + ammonium electrolytes (nitrate, NO3−; tartrate, C4H4O62−; phosphate, HPO42−; acetate, C2H3O2−) + water, at different temperatures (298.2 and 313.2 K) are presented in this paper. The experimental ATPS data were correlated with the original and modified non-random two-liquid (NRTL) for predicting energetic parameters of the studied systems. The results were satisfactory with global root mean square deviations (33 tie-lines) of the 2.36% and 2.53% for the original and modified models, respectively. The effect of the temperature and electrolyte nature on the biphasic area position was investigated. The increase of the temperature promoted a slight increase in the two-phase region indicating the endothermic character of the phase splitting. The increase in the temperature also promoted a rise in the module of the slope of the tie-lines. The anions ability to promote phase separation followed the order: HPO42− > C4H4O62− > NO3− > C2H3O2−. | en |
dc.format | pt-BR | |
dc.language.iso | eng | pt-BR |
dc.publisher | Fluid Phase Equilibria | pt-BR |
dc.relation.ispartofseries | v. 469, p. 26- 32, ago. 2018 | pt-BR |
dc.rights | Elsevier B.V. | pt-BR |
dc.subject | Aqueous two-phase systems | pt-BR |
dc.subject | Liquid-liquid equilibrium | pt-BR |
dc.subject | Ammonium salts | pt-BR |
dc.subject | L35 | pt-BR |
dc.subject | NRTL | pt-BR |
dc.title | Phase equilibrium of aqueous two-phase systems composed by L35 triblock copolymer + organic and inorganic ammonium electrolytes + water at 298.2 and 313.2 K | en |
dc.type | Artigo | pt-BR |
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