Vapor-Liquid Equilibrium of Carbon Dioxide + Ethanol : Experimental Measurements with Acoustic Method and Thermodynamic Modeling
Joint Authors
Mehl, Ana
Falcão, Pedro W.
Cardozo-Filho, Lucio
Pessoa, Fernando L. P.
Nascimento, Fabio P.
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-05-24
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Phase behavior of systems composed by supercritical carbon dioxide and ethanol is of great interest, especially in the processes involving supercritical extraction in which ethanol is used as a cosolvent.
The development of an apparatus, which is able to perform the measurements of vapor-liquid equilibrium (VLE) at high pressure using a combination of the visual and the acoustic methods, was successful and was proven to be suited for determining the isothermal VLE data of this system.
The acoustic method, based on the variation of the amplitude of an ultra-sound signal passing through a mixture during a phase transition, was applied to investigate the phase equilibria of the system carbon dioxide + ethanol at temperatures ranging from 298.2 K to 323.2 K and pressures from 3.0 MPa to 9.0 MPa.
The VLE data were correlated with Peng-Robinson equation of state combined with two different mixing rules and the SAFT equations of state as well.
The compositions calculated with the models are in good agreement with the experimental data for the isotherms evaluated.
American Psychological Association (APA)
Mehl, Ana& Nascimento, Fabio P.& Falcão, Pedro W.& Pessoa, Fernando L. P.& Cardozo-Filho, Lucio. 2011. Vapor-Liquid Equilibrium of Carbon Dioxide + Ethanol : Experimental Measurements with Acoustic Method and Thermodynamic Modeling. Journal of Thermodynamics،Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-457456
Modern Language Association (MLA)
Mehl, Ana…[et al.]. Vapor-Liquid Equilibrium of Carbon Dioxide + Ethanol : Experimental Measurements with Acoustic Method and Thermodynamic Modeling. Journal of Thermodynamics No. 2011 (2011), pp.1-11.
https://search.emarefa.net/detail/BIM-457456
American Medical Association (AMA)
Mehl, Ana& Nascimento, Fabio P.& Falcão, Pedro W.& Pessoa, Fernando L. P.& Cardozo-Filho, Lucio. Vapor-Liquid Equilibrium of Carbon Dioxide + Ethanol : Experimental Measurements with Acoustic Method and Thermodynamic Modeling. Journal of Thermodynamics. 2011. Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-457456
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-457456