Experimental data and thermodynamic modeling of ternary aqueous aqueousbiphasic systems of EO/PO polymers¿Na2SO4¿H2O

M Milosevic, KJJ Staal, B Schuur, AB de Haan

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

tLiquid¿liquid extraction using thermoresponsive polymers as solvents in aqueous two phase systemsfollowed by induced phase separation to recover the polymers is a potential technology for water¿saltseparations. Here we report for seven polymers on their ternary systems containing water, sodium sulfateand the (block co)poly ether. Equilibrium data were measured at 298.15 K and 313.15 K and atmosphericpressure. Empirical equations have been used to correlate the experimental equilibria for both temper-atures separately and the semi-empirical NRTL model has been applied with a temperature dependentparameter to describe the complete dataset for both temperatures together. Model predictions were ingood agreement with the experimental data.
Original languageEnglish
Pages (from-to)45-56
Number of pages12
JournalFluid Phase Equilibria
Volume366
Publication statusPublished - 2014

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