Isobaric vapor–liquid and vapor–liquid–liquid equilibrium data for the water–ethanol–hexane system

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Title: Isobaric vapor–liquid and vapor–liquid–liquid equilibrium data for the water–ethanol–hexane system
Authors: Gomis Yagües, Vicente | Font, Alicia | Pedraza Berenguer, Ricardo | Saquete Ferrándiz, María Dolores
Research Group/s: Equilibrio entre Fases
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Water | Ethanol | Hexane | Vapor–liquid equilibria | Vapor–liquid–liquid equilibria
Knowledge Area: Ingeniería Química
Date Created: 2007
Issue Date: Oct-2007
Publisher: Elsevier
Citation: GOMIS YAGÜES, Vicente, et al. “Isobaric vapor–liquid and vapor–liquid–liquid equilibrium data for the water–ethanol–hexane system”. Fluid Phase Equilibria. Vol. 259, Issue 1 (1 Oct. 2007). ISSN 0378-3812, pp. 66-70
Series/Report no.: LV | 6
Abstract: Isobaric vapor–liquid and vapor–liquid–liquid equilibria were measured for the water–ethanol–hexane system at normal atmospheric pressure. The apparatus used for the determination of vapor–liquid–liquid equilibrium data was an all-glass dynamic recirculating still with an ultrasonic homogenizer coupled to the boiling flask. The experimental data demonstrated the existence of a ternary heterogeneous azeotrope at 329.2K with a composition of 0.105, 0.236 and 0.658 mol fraction of water, ethanol and hexane, respectively. The experimental vapor–liquid and vapor–liquid–liquid equilibria data were found to be thermodynamically consistent. The correlation of these data was carried out using NRTL and UNIQUAC models and predicted with UNIFAC. The equilibrium data of the system were compared with other hydrocarbon systems previously analyzed and commonly used as entrainers in the dehydration of the ethanol by azeotropic distillation such as benzene and cyclohexane.
Sponsor: The authors thank the DGICYT of Spain for the financial support of project PPQ2003-03385.
URI: http://hdl.handle.net/10045/1952
ISSN: 0378-3812
DOI: 10.1016/j.fluid.2007.04.011
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.fluid.2007.04.011
Appears in Collections:INV - EQF - Artículos de Revistas

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