Measurement and mathematical modeling of solubility of buttery-odor substance (acetoin) in supercritical CO2 at several pressures and temperatures

Effendi, Chintya and Shanty, Margareth and Ju, Yi-Hsu and Kurniawan, Alfin and Wang, Meng-Jiy and Indraswati, Nani and Ismadji, Suryadi (2013) Measurement and mathematical modeling of solubility of buttery-odor substance (acetoin) in supercritical CO2 at several pressures and temperatures. Fluid Phase Equilibria, 356. pp. 102-108. ISSN 0378-3812

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Abstract

The solubilities of acetoin (3-hydroxy-2-butanone),a frequently used buttery-odor compound in supercritical carbon dioxide (SC-CO2)at several pressures and temperatures were measured in this work. The measurements were conducted in a static-analytic mode at several pressures ranging from 8 MPa to 28 MPa and four temperatures of 313.15 K, 323.15 K,333.15 K, and 343.15 K. The equilibrium was established for 3–4 h. The solubilities of acetoin in SC-CO2 increased with increasing both pressure and temperature beyond the crossover pressure at 8 MPa. Two density-based models namely Chrastil and Del Valle-Aguilera and Peng–Robinson equation of state (PR-EOS) with quadratic and Stryjek–Vera mixing rules were used to represent experimental solubilities and to describe phase behavior of the system. Both Chrastil and Del Valle-Aguilera models were able to correlate experimental solubility data satisfactorily with absolute average relative deviation (AARD) of 0.27%. Similarly, the phase equilibrium behavior of acetoin + supercritical CO2 binary system can be well interpreted by PR-EOS with quadratic (AARD of 0.11%) and Stryjek–Vera mixing rules (AARD of 0.08%).

Item Type: Article
Uncontrolled Keywords: Acetoin Solubility Density-based model Equations of state Mixing rules
Subjects: Engineering > Chemical Engineering
Divisions: Faculty of Engineering > Chemical Engineering Study Program
Depositing User: Suryadi. Ismadji
Date Deposited: 05 Jun 2017 04:58
Last Modified: 19 Jul 2018 07:31
URI: http://repository.wima.ac.id/id/eprint/10783

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