Separation of water/butan-1-ol with ionic liquids in ternary liquid-liquid phase equilibrium

Urszula Domańska-Żelazna , Michał Wlazło , Monika Karpińska

Abstract

In this work ionic liquids (ILs) as a novel popular solvents are proposed for removing butan-1-ol from the aqueous fermentation media. Ternary liquid-liquid phase equilibrium data are presented for mixtures of {ionic liquid (1) + butan-1-ol (2) + water (3)} at T = 328.15 K and ambient pressure. The ILs with long alkane chains such as hexadecyltrimethylammonium bis{(trifluomethyl)sulfonyl}imide, [N16,1,1,1][NTf2], 1,3-didecyl-2-methylimidazolium dicyanamide, [D2MIM][DCA] and tetrabutylphosphonium bis{(trifluomethyl)sulfonyl}imide, [P4,4,4,4][NTf2] have been tested. The results are discussed in terms of the selectivity and solute distribution ratio of separation of related systems. The complete miscibility in the binary liquid systems of butan-1-ol with three used ILs was observed. The ammonium-based IL in comparison with phosphonium-based IL shows lower selectivity and solute distribution ratio. The non-random two liquid NRTL model was used successfully to correlate the experimental tie-lines and to calculate the phase composition error in mole fraction in the ternary systems.
Author Urszula Domańska-Żelazna
Urszula Domańska-Żelazna,,
-
, Michał Wlazło (FC / DPC)
Michał Wlazło,,
- Department Of Physical Chemistry
, Monika Karpińska (FC / DPC)
Monika Karpińska,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical Thermodynamics, ISSN 0021-9614, (A 30 pkt)
Issue year2019
Vol134
Pages76-83
Publication size in sheets0.5
Keywords in EnglishWater/butan-1-ol separationIonic liquidsLLE in ternary systemsCorrelationSelectivitySolute distribution ratio
ASJC Classification1606 Physical and Theoretical Chemistry
DOIDOI:10.1016/j.jct.2019.03.001
URL https://www.sciencedirect.com/science/article/pii/S0021961418310942?via%3Dihub
Languageen angielski
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1-s2.0-S0021961418310942-main.pdf 1.16 MB
Score (nominal)30
ScoreMinisterial score = 30.0, 17-07-2019, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.111; WoS Impact Factor: 2017 = 2.631 (2) - 2017=2.531 (5)
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