Simulation of the supercritical CO2 extraction from natural matrices in packed bed columns: User-friendly simulator tool using Excel
| Autor: | Álvaro Cabeza, María José Cocero, F. Sobron, Juan García-Serna |
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| Rok vydání: | 2016 |
| Předmět: |
Packed bed
Decaffeination Supercritical carbon dioxide Materials science business.industry General Chemical Engineering Extraction (chemistry) Analytical chemistry 04 agricultural and veterinary sciences 02 engineering and technology Condensed Matter Physics 040401 food science Supercritical fluid 0404 agricultural biotechnology 020401 chemical engineering Mass transfer Scientific method 0204 chemical engineering Physical and Theoretical Chemistry Solubility Process engineering business |
| Zdroj: | UVaDOC. Repositorio Documental de la Universidad de Valladolid instname |
| Popis: | 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. CTQ2015-64892-R (MINECO/FEDER) |
| Databáze: | OpenAIRE |
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