Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19220
Title: Modeling of supercritical fluid extraction from Hippophae rhamnoides L. seeds
Authors: Yin, J
Sun, X
Ding, X
Liang, H 
Keywords: Hippophae rhamnoides L. seed
Simulation
Supercritical fluid extraction
Issue Date: 2003
Publisher: Marcel Dekker Inc
Source: Separation science and technology, 2003, v. 38, no. 16, p. 4041-4055 How to cite?
Journal: Separation Science and Technology 
Abstract: Modeling of supercritical CO 2 extraction of Hippophae rhamnoides L. seed oil was studied at 15 to 30 MPa and 30 to 45°C. Four mean Hippophae rhamnoides L. particle sizes raging from 0.4 to 1.0 mm were tested. CO 2 flow rate ranged between 0.05 and 0.2 m 3 h -1. A new method that can be used for the simulation of SCFE process was presented. The model was based on differential mass balances along the extraction bed. The equilibrium between the solid and the fluid phase appeared to be the controlling step during the extraction fast period. By a series of transforms and derivatives, the explicit expression of the oil yield, q(z,t), was obtained. It can be used for the SCFE process simulation. In this model, only one adjustable parameter was used: the equilibrium constant between the solvent and the free solute phase, K. A fairly good fitting of the experimental data was obtained by setting K = 10. The Hippophae rhamnoides L. seed oil extraction process was modeled as a desorption process from the seed matter plus a small mass-transfer resistance.
URI: http://hdl.handle.net/10397/19220
ISSN: 0149-6395
DOI: 10.1081/SS-120024718
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