Brazilian Journal of Chemical Engineering | |
Thermodynamic modelling of phase equilibrium for water + poly(Ethylene glycol) + salt aqueous two-phase systems | |
R.a.g. Sé1  M. Aznar1  | |
[1] ,UNICAMP School of Chemical Engineering Campinas SP ,Brazil | |
关键词: aqueous two-phase systems; liquid-liquid equilibrium; polymers; salts; NRTL model; | |
DOI : 10.1590/S0104-66322002000200006 | |
来源: SciELO | |
【 摘 要 】
The NRTL (nonrandom, two-liquid) model, expressed in mass fraction instead of mole fraction, was used to correlate liquid-liquid equilibria for aqueous two-phase polymer-salt solutions. New interaction energy parameters for this model were determined using reported data on the water + poly(ethylene glycol) + salt systems, with different molecular masses for PEG and the salts potassium phosphate, sodium sulfate, sodium carbonate and magnesium sulfate. The correlation of liquid-liquid equilibrium is quite satisfactory.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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