Supercritical Equilibrium Data of the Systems Carbon Dioxide—Linalool and Carbon Dioxide—Orange Essential Oil
- 1 Dipartimento di Ingegneria Chimica Materiali Ambiente, “Sapienza” Università di Roma, Rome, Italy
- 2 Dipartimento di Ingegneria Chimica Materiali Ambiente, “Sapienza” Università di Roma, Rome, Italy
- 3 Dipartimento di Ingegneria Chimica Materiali Ambiente, “Sapienza” Università di Roma, Rome, Italy
Abstract
In this paper experimental equilibrium data on the system supercritical CO 2 - orange essential oil and the system supercritical CO 2 -linalool are reported at 323.15 K and 343.15 K, for pressures in the ranges of 7.6 - 13.5 MPa. The behavior of the system supercritical CO 2 - orange essential oil was represented by means of thermodynamic model, based on Peng - Robinson equation of state. To this aim the orange essential oil was represented by a mixture of limonene, linalool and β -caryophyllene, selected to represent the classes of monoterpenes, oxygenated terpenes and sesquiterpenes respectively. The model uses only regression parameters calculated from binary sub-systems, CO 2 -limonene and CO 2 - β -caryophyllene (taken from literature) and CO 2 -linalool (calculated from the fitting of original data reported in the present work) thus being predictive with respect to the multicomponent mixture.
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