Journal
FLUID PHASE EQUILIBRIA
Volume 458, Issue -, Pages 40-46Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fluid.2017.11.010
Keywords
Liquid-liquid equilibrium; Isopropanol; Extraction; Extractive solvents
Funding
- National Natural Science Foundation of China [21676152, 21306093]
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To separate isopropanol from its aqueous solution, isobutyl acetate, butyl acetate and butyl propionate were adopted as the extractive solvents, and the liquid-liquid equilibrium (LLE) data for the ternary systems (isobutyl acetate / butyl acetate / butyl propionate) + isopropanol + water were determined at 298.15 K and 308.15 K under atmospheric pressure. The experimental LLE data were correlated by the NRTL and UNIQUAC models, and the values of the root mean square deviations (RMSD) were less than 1%. And the binary interaction parameters of the NRTL and UNIQUAC models were optimized. Meantime, the distribution coefficient and selectivity were calculated to evaluate the extraction capacity of the solvents. As a result, butyl propionate is a desirable extractive solvent compared with the other two solvents. (C) 2017 Elsevier B.V. All rights reserved.
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