Experimental data and thermodynamic modeling of ternary aqueous biphasic systems of EO/PO polymers–Na2SO4–H2O

M. Milosevic, K.J.J. Staal, Boelo Schuur, A.B. de Haan

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

Liquid–liquid extraction using thermoresponsive polymers as solvents in aqueous two phase systems followed by induced phase separation to recover the polymers is a potential technology for water–salt separations. Here we report for seven polymers on their ternary systems containing water, sodium sulfate and the (block co)poly ether. Equilibrium data were measured at 298.15 K and 313.15 K and atmospheric pressure. Empirical equations have been used to correlate the experimental equilibria for both temperatures separately and the semi-empirical NRTL model has been applied with a temperature dependent parameter to describe the complete dataset for both temperatures together. Model predictions were in good agreement with the experimental data.
Original languageEnglish
Pages (from-to)45-56
Number of pages12
JournalFluid phase equilibria
Volume366
DOIs
Publication statusPublished - 2014

Keywords

  • METIS-305354
  • IR-94916

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