Method development in inverse modeling applied to supercritical fluid extraction of lipids
Abrahamsson, Victor LU ; Andersson, Niklas LU
; Nilsson, Bernt
LU
and Turner, Charlotta
LU
(2016)
In Journal of Supercritical Fluids
111.
p.14-27
- Abstract
Modeling of the supercritical fluid extraction of solid materials is an important aspect in order to understand and predict the process. A comparison of two empirical models, two semi-empirical models and two mechanistic models is performed using calibration of single experiments. It is concluded that the best fit is obtained using a simple empirical expression. Furthermore, single calibrations did not generate reliable parameters with physical meaning and a methodology is proposed for inverse modeling with complete calibration using several experiments. The experimental dataset contained 29 extractions of lipids from crushed linseeds with varying temperatures, pressures and flow rates. A general rate model and a proposed extension of... (More)
Modeling of the supercritical fluid extraction of solid materials is an important aspect in order to understand and predict the process. A comparison of two empirical models, two semi-empirical models and two mechanistic models is performed using calibration of single experiments. It is concluded that the best fit is obtained using a simple empirical expression. Furthermore, single calibrations did not generate reliable parameters with physical meaning and a methodology is proposed for inverse modeling with complete calibration using several experiments. The experimental dataset contained 29 extractions of lipids from crushed linseeds with varying temperatures, pressures and flow rates. A general rate model and a proposed extension of the hot ball model were evaluated for this purpose. The methodology includes data acquisition, model structure estimation, model calibration and a cross-validation. In general, it was found that the solubility model of Sovová outperformed the other evaluated correlations, and for the general rate model the Toth partition isotherm was also found in the top model structures. However, no generalization could be made regarding the correlations describing the Nernst diffusion layer and diffusivity.
(Less)
- author
- Abrahamsson, Victor
LU
; Andersson, Niklas
LU
; Nilsson, Bernt
LU
and Turner, Charlotta
LU
- organization
- publishing date
- 2016-05-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Inverse modeling, Kinetics, Partition isotherma, SFE
- in
- Journal of Supercritical Fluids
- volume
- 111
- pages
- 14 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:84955482910
- wos:000372680600003
- ISSN
- 0896-8446
- DOI
- 10.1016/j.supflu.2016.01.006
- language
- English
- LU publication?
- yes
- id
- 240a4003-64d5-4103-8bff-ffee6db4440a
- date added to LUP
- 2016-05-10 12:27:43
- date last changed
- 2024-02-02 14:35:48
@article{240a4003-64d5-4103-8bff-ffee6db4440a,
abstract = {{<p>Modeling of the supercritical fluid extraction of solid materials is an important aspect in order to understand and predict the process. A comparison of two empirical models, two semi-empirical models and two mechanistic models is performed using calibration of single experiments. It is concluded that the best fit is obtained using a simple empirical expression. Furthermore, single calibrations did not generate reliable parameters with physical meaning and a methodology is proposed for inverse modeling with complete calibration using several experiments. The experimental dataset contained 29 extractions of lipids from crushed linseeds with varying temperatures, pressures and flow rates. A general rate model and a proposed extension of the hot ball model were evaluated for this purpose. The methodology includes data acquisition, model structure estimation, model calibration and a cross-validation. In general, it was found that the solubility model of Sovová outperformed the other evaluated correlations, and for the general rate model the Toth partition isotherm was also found in the top model structures. However, no generalization could be made regarding the correlations describing the Nernst diffusion layer and diffusivity.</p>}},
author = {{Abrahamsson, Victor and Andersson, Niklas and Nilsson, Bernt and Turner, Charlotta}},
issn = {{0896-8446}},
keywords = {{Inverse modeling; Kinetics; Partition isotherma; SFE}},
language = {{eng}},
month = {{05}},
pages = {{14--27}},
publisher = {{Elsevier}},
series = {{Journal of Supercritical Fluids}},
title = {{Method development in inverse modeling applied to supercritical fluid extraction of lipids}},
url = {{https://lup.lub.lu.se/search/files/25069959/Abrahamsson_2016_GreenOA.pdf}},
doi = {{10.1016/j.supflu.2016.01.006}},
volume = {{111}},
year = {{2016}},
}