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)

• Published in: The Korean journal of chemical engineering Vol. 33; no. 7; pp. 2179 - 2185
• Main Authors: Qasim, Faraz, Choi, Hyeung Chul, Shin, Jae Sun, Park, Sang Jin
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2016; 한국화학공학회
• Subjects: Biotechnology; Catalysis; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Materials Science; Separation Technology; Thermodynamics; 화학공학; UNIQUAC; NRTL; Root Mean Square Deviation; Entrainer; Liquid-liquid Equilibrium (LLE) Data; Average Absolute Deviation
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-016-0066-x

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.