Theoretical models for supercritical fluid extraction

Journal of Chromatography. a
Zhen HuangWei-Juan Jiang

Abstract

For the proper design of supercritical fluid extraction processes, it is essential to have a sound knowledge of the mass transfer mechanism of the extraction process and the appropriate mathematical representation. In this paper, the advances and applications of kinetic models for describing supercritical fluid extraction from various solid matrices have been presented. The theoretical models overviewed here include the hot ball diffusion, broken and intact cell, shrinking core and some relatively simple models. Mathematical representations of these models have been in detail interpreted as well as their assumptions, parameter identifications and application examples. Extraction process of the analyte solute from the solid matrix by means of supercritical fluid includes the dissolution of the analyte from the solid, the analyte diffusion in the matrix and its transport to the bulk supercritical fluid. Mechanisms involved in a mass transfer model are discussed in terms of external mass transfer resistance, internal mass transfer resistance, solute-solid interactions and axial dispersion. The correlations of the external mass transfer coefficient and axial dispersion coefficient with certain dimensionless numbers are also discuss...Continue Reading

References

Jul 13, 2007·Journal of Chromatography. a·Seied Mahdi Pourmortazavi, Seiedeh Somayyeh Hajimirsadeghi

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Citations

Jul 5, 2016·Food Chemistry·Leila Larisa Medeiros MarquesJoão Carlos Palazzo de Mello
Nov 17, 2015·Chemistry & Biodiversity·Adina Iulia TalmaciuValentin I Popa
Feb 12, 2013·Natural Product Reports·Franz BucarMartin Schmid
Aug 23, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Łukasz WoźniakSylwia Skąpska
Jun 26, 2018·Food Science and Biotechnology·Grzegorz DąbrowskiSylwester Czaplicki
Jan 25, 2019·Gels·İbrahim ŞahinCan Erkey
Oct 31, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Łukasz WoźniakRenata Jędrzejczak
Dec 11, 2020·Chemosphere·Dong XiaJean-Christophe P Gabriel
Jul 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ruihong LiJunxing Dong

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