Claudio Capparucci, Sara Frattari, Fausto Gironi
Dipartimento di Ingegneria Chimica Materiali Ambiente, “Sapienza” Università di Roma, Rome, Italy.
DOI: 10.4236/ajac.2013.412093   PDF    HTML     3,453 Downloads   5,287 Views   Citations

Abstract

In this paper experimental equilibrium data on the system supercritical CO₂-orange essential oil and the system supercritical CO₂-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 CO₂-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, CO₂-limonene and CO₂-β-caryophyllene (taken from literature) and CO₂-linalool (calculated from the fitting of original data reported in the present work) thus being predictive with respect to the multicomponent mixture.

 

Keywords

Supercritical; Extraction; Carbon Dioxide; Orange Essential Oil; Linalool; Phase Equilibrium

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Conflicts of Interest

The authors declare no conflicts of interest.

References

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