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Experimental measurements and modeling of curcumin solubility in CO2-expanded ethanol

Cunico, Larissa P. LU ; Acosta, Mar Coto and Turner, Charlotta LU (2017) In Journal of Supercritical Fluids p.381-388
Abstract

Carbon dioxide expanded liquids (CXLs) is a relatively recent type of solvent used in separation processes such as extraction. It combines the benefits of high solubility in the organic liquid with enhanced mass transfer mediated by the compressed CO2. In this work, we investigate the solubility of curcumin in CO2-expanded ethanol and for this purpose an equipment setup was built and used for experimental measurements at the temperatures of 308 and 323K and the pressure range of 10-30MPa. The amount of CO2 added to ethanol was varied between 10 and 50mol%. Results show that the highest solubility of curcumin was obtained at the highest temperature and the lowest amounts of CO2 (10mol%) in the... (More)

Carbon dioxide expanded liquids (CXLs) is a relatively recent type of solvent used in separation processes such as extraction. It combines the benefits of high solubility in the organic liquid with enhanced mass transfer mediated by the compressed CO2. In this work, we investigate the solubility of curcumin in CO2-expanded ethanol and for this purpose an equipment setup was built and used for experimental measurements at the temperatures of 308 and 323K and the pressure range of 10-30MPa. The amount of CO2 added to ethanol was varied between 10 and 50mol%. Results show that the highest solubility of curcumin was obtained at the highest temperature and the lowest amounts of CO2 (10mol%) in the mixture. Moreover, the new-built equipment setup allows the determination of the solubility for compounds with high molar light absorptivity such as curcumin. The experimental data was correlated using PR-EOS and the modified Chrastil model.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Curcumin, Gas expanded liquid, Green solvent, Solubility, Supercritical fluid chromatography, Thermal degradation
in
Journal of Supercritical Fluids
pages
381 - 388
publisher
Elsevier
external identifiers
  • scopus:85028360426
ISSN
0896-8446
DOI
10.1016/j.supflu.2017.06.018
language
English
LU publication?
yes
id
29cee573-1058-4980-b96b-b8ae59a00f62
date added to LUP
2017-09-14 14:22:06
date last changed
2017-09-14 14:22:06
@article{29cee573-1058-4980-b96b-b8ae59a00f62,
  abstract     = {<p>Carbon dioxide expanded liquids (CXLs) is a relatively recent type of solvent used in separation processes such as extraction. It combines the benefits of high solubility in the organic liquid with enhanced mass transfer mediated by the compressed CO<sub>2</sub>. In this work, we investigate the solubility of curcumin in CO<sub>2</sub>-expanded ethanol and for this purpose an equipment setup was built and used for experimental measurements at the temperatures of 308 and 323K and the pressure range of 10-30MPa. The amount of CO<sub>2</sub> added to ethanol was varied between 10 and 50mol%. Results show that the highest solubility of curcumin was obtained at the highest temperature and the lowest amounts of CO<sub>2</sub> (10mol%) in the mixture. Moreover, the new-built equipment setup allows the determination of the solubility for compounds with high molar light absorptivity such as curcumin. The experimental data was correlated using PR-EOS and the modified Chrastil model.</p>},
  author       = {Cunico, Larissa P. and Acosta, Mar Coto and Turner, Charlotta},
  issn         = {0896-8446},
  keyword      = {Curcumin,Gas expanded liquid,Green solvent,Solubility,Supercritical fluid chromatography,Thermal degradation},
  language     = {eng},
  pages        = {381--388},
  publisher    = {Elsevier},
  series       = {Journal of Supercritical Fluids},
  title        = {Experimental measurements and modeling of curcumin solubility in CO<sub>2</sub>-expanded ethanol},
  url          = {http://dx.doi.org/10.1016/j.supflu.2017.06.018},
  year         = {2017},
}