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Title: A simple approach for the determination and characterization of ternary phase diagrams of aqueous two-phase systems composed of water, poly(ethylene) glycol and sodium carbonate
Author: Capela, Emanuel V.
Santos, João H.P.M.
Boal-Palheiros, Isabel
Carvalho, Pedro J.
Coutinho, João A.P.
Ventura, Sónia P.M.
Freire, Mara G.
Issue Date: 2019
Publisher: University of Florida
Abstract: In this work, an experimental protocol to determine liquid-liquid phase diagrams of aqueous two-phase systems (ATPS) in a chemical engineering course is described. Throughout this laboratory set of experiments, students will determine liquid-liquid ternary phase diagrams, comprising the solubility curves, tie-lines, tie-line lengths and critical points, for systems composed of poly(ethylene) glycol, sodium carbonate and water. Furthermore, students will apply the NRTL (Non-Random Two Liquid) model to fit the experimental tie-lines.
Peer review: yes
ISSN: 0009-2479
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Appears in Collections:CICECO - Artigos

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