(Liquid + liquid) equilibria for ternary mixtures of (polyvinylpyrrolidone + MgSO4 + water) at different temperatures |
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| Institution: | 1. Saint-Petersburg State University, Universitetskii pr. 26, St. Petersburg 198504, Russia;2. Saint-Petersburg State Technological Institute (Technical University), Moskovskii pr., 26, St. Petersburg 190013, Russia;3. Lappeenranta University of Technology LUT, Skinnarilankatu 34, Lappeenranta, Finland;4. North-Western State Medical University named after I. I. Mechnicov, Piskarevskij pr. 47, St. Petersburg 195067, Russia |
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| Abstract: | Experimental (liquid + liquid) equilibrium (LLE) data were determined for a ternary system (polyvinylpyrrolidone + MgSO4 + water) at various temperatures of (298.15, 303.15, and 308.15) K. The UNIQAC, modified regular solution, modified Wilson and Chen-NRTL models were used to correlate the experimental tie-line data. The results show that at each temperature, the quality of fitting is better with the Chen-NRTL model. |
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