Extraction and modeling of lavender flower essential oil using supercritical carbon dioxide

Akgun M., Akgun N., Dincer S.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol.39, no.2, pp.473-477, 2000 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 2
  • Publication Date: 2000
  • Doi Number: 10.1021/ie9904798
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.473-477
  • Yıldız Technical University Affiliated: Yes


Essential oil was extracted from lavender flowers (Lavandula Stoechas subspecies Cariensis Boiss) in a semicontinuous system by supercritical CO2. Experiments were carried out in the ranges of 8-14 MPa pressures, 308-323 K temperatures, and 1.092-2.184 x 10(-3) kg/min carbon dioxide now rates. The extraction process was modeled by a quasi-steady-state model as a function of extraction time, flow rate, pressure, and temperature. The model contains only one adjustable parameter, the intraparticle diffusion coefficient (effective diffusivity) D-e. The model using the best fit of D-e correlates the data satisfactorily.