US EPA

3486702 

Journal Article 

Liquid-liquid equilibrium data for water-ethanol-entrainer ternary system with entrainers: Cyclohexane, n-pentane, DEE (diethyl ether), DIPE (di-isopropyl ether), ETBE (ethyl tert-butyl ether) 

Qasim, F; Choi, HC; Shin, JS; Park, SJ 

2016 

1 

Korean Journal of Chemical Engineering
ISSN: 0256-1115
EISSN: 1975-7220 

33 

7 

2179-2185 

10.1007/s11814-016-0066-x 

WOS:000379062100022 

http://link.springer.com/10.1007/s11814-016-0066-x
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The water-ethanol system was studied experimentally to find the liquid-liquid equilibrium (LLE) data at various temperature values by using five different entrainers: cyclohexane, n-pentane, DEE (diethyl ether), DIPE (diisopropyl ether), and ETBE (ethyl tert-butyl ether). Ternary LLE data for water-ethanol-entrainer system was determined based on an experimental procedure. Exact liquid activity coefficient parameters were found by experimental data and LLE data was predicted. For this purpose, two thermodynamic models, NRTL and UNIQUAC, were compared and contrasted with experimental data to probe into the better thermodynamic model for the azeotropic processes of ethanol system. The most promising entrainer was found through root mean square and average absolute deviations. 

Liquid-liquid Equilibrium (LLE) Data; NRTL; UNIQUAC; Entrainer; Average Absolute Deviation; Root Mean Square Deviation