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Type: Artigo de periódico
Title: Aqueous two-phase systems of poly(ethylene glycol) and sodium citrate: Experimental results and modeling
Author: Alves, JGLF
Brenneisen, J
Ninni, L
Meirelles, AJA
Maurer, G
Abstract: Aqueous two-phase systems of poly(ethylene) glycol and a salt are considered as extraction media for large-scale downstream processing of industrially important enzymes. The present paper deals with one of such two-phase systems. New experimental results are presented for the composition of the coexisting liquid phases of the system (water + poly(ethylene glycol) + sodium citrate) at 298.15 K for three poly(ethylene) glycols of different molar masses of about (600, 1500, and 3000) g.mol(-1), respectively. The experimental results are described within experimental uncertainty by a semiempirical expression for the excess Gibbs energy.
Country: EUA
Editor: Amer Chemical Soc
Rights: fechado
Identifier DOI: 10.1021/je800137f
Date Issue: 2008
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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