Phase equilibria of palm oil, palm kernel oil, and oleic acid + supercritical carbon dioxide and modeling using Peng-Robinson EOS

Title
Phase equilibria of palm oil, palm kernel oil, and oleic acid + supercritical carbon dioxide and modeling using Peng-Robinson EOS
Authors
홍승아김재덕김재훈강정원강익종
Keywords
Oleic acid; Palm oil; Palm kernel oil; Equilibrium; Supercritical; Peng?obinson Equation of State (PR-EOS)
Issue Date
2010-08
Publisher
Journal of industrial and engineering chemistry
Citation
VOL 16, 859-865
Abstract
Vapor–liquid equilibria of the binary supercritical carbon dioxide (scCO2) + oleic acid, scCO2 + palm oil, and scCO2 + palm kernel oil were measured at a wide range of temperatures from 333.2 to 373.2 K and pressures from 8.5 to 35 MPa in a circulation-type phase equilibrium apparatus. The samples from liquid and vapor phases were analyzed using UV–vis spectrometer and a liquid hold-up equipment. The phase equilibrium data were correlated with Peng–Robinson Equation of State (PR-EOS) using Wong–Sandler mixing rule and optimum values of binary interaction parameters were determined. The relative deviation between experimental data and predicted data was in the range of 6.9–8.7%, suggesting that the PR-EOS with Wong–Sandler mixing rule is capable of predicting the vapor–liquid equilibria of oleic acid + scCO2, palm oil + scCO2, and palm kernel oil + scCO2.
URI
http://pubs.kist.re.kr/handle/201004/37859
ISSN
1226-086x
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KIST Publication > Article
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