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Type: Artigo de periódico
Title: Thermodynamic modelling of phase equilibrium for water + poly(Ethylene glycol) + salt aqueous two-phase systems
Author: Sé, R.A.G.
Aznar, M.
Abstract: 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.
Subject: aqueous two-phase systems
liquid-liquid equilibrium
NRTL model
Editor: Brazilian Society of Chemical Engineering
Rights: aberto
Identifier DOI: 10.1590/S0104-66322002000200006
Date Issue: 1-Apr-2002
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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