Phase equilibria of palm oil, palm kernel oil, and oleic acid + supercritical carbon dioxide and modeling using Peng-Robinson EOS
- Phase equilibria of palm oil, palm kernel oil, and oleic acid + supercritical carbon dioxide and modeling using Peng-Robinson EOS
- 홍승아; 김재덕; 김재훈; 강정원; 강익종
- Oleic acid; Palm oil; Palm kernel oil; Equilibrium; Supercritical; Peng？obinson Equation of State (PR-EOS)
- Issue Date
- Journal of industrial and engineering chemistry
- VOL 16, 859-865
- 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.
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