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 language | English |
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Pages (from-to) | 45-56 |
Number of pages | 12 |
Journal | Fluid Phase Equilibria |
Volume | 366 |
Publication status | Published - 2014 |