2026-05-05T18:23:45Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/234922025-03-26T19:10:04Zcom_10324_31661com_10324_952com_10324_894com_10324_23040com_10324_954col_10324_31662col_10324_23041
UVaDOC
author
Cabeza Sánchez, Álvaro
author
Sobrón Grañón, Francisco
author
García Serna, Juan
author
Cocero Alonso, María José
2017-06-15T08:11:44Z
2017-06-15T08:11:44Z
2016
The Journal of Supercritical Fluids, Octubre 2016, vol. 116, p. 196-208
http://uvadoc.uva.es/handle/10324/23492
10.1016/j.supflu.2016.05.020
The aim of this work was to develop a user-friendly Excel interface to adjust the yields of an extraction column for SCF extraction. Moreover, this program could simulate the dynamic concentration profiles inside the column, being a useful teaching tool. The model comprises non-stationary mass balances for recovered compounds in both phases (solid and supercritical CO2). The model was tested by reproducing the extraction of two samples: sesame seeds and coffee beans (average deviations of 7.41% and 10.35%, respectively). These samples were selected to demonstrate the feasibility of reproducing processes whose mass transfer limitation is different. Thus, for the sesame seeds, the extraction process was controlled by both the external mass transfer and oil solubility, since the seeds were grinded. On the contrary, for coffee grains, the internal diffusion controls the extraction as the whole grain is required. Regarding solubility, a Henry’s relation between solid and CO2 concentration was assumed.
eng
Attribution-NonCommercial-NoDerivatives 4.0 International
Simulation of the supercritical CO2 extraction from natural matrices in packed bed columns: User-friendly simulator tool using Excel
info:eu-repo/semantics/article
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https://uvadoc.uva.es/bitstream/10324/23492/1/Simulation_extraction.pdf
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ab726f1569ce53c85462ef1a0924e51e
1108727
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Simulation_extraction.pdf