Prediction of the best cosolvents to solubilise fatty acids in supercritical CO2 using the Hansen solubility theory

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dc.contributor.authorTirado Armesto, Diego Felipe
dc.contributor.authorTenorio, María José
dc.contributor.authorCabañas Poveda, Albertina
dc.contributor.authorCalvo Garrido, María Lourdes
dc.date.accessioned2023-06-18T00:11:46Z
dc.date.available2023-06-18T00:11:46Z
dc.date.issued2018
dc.description.abstractCosolvents are employed to improve the extraction efficiency and modify the selectivity of the main solvent. However, choosing a proper cosolvent in supercritical extraction is an arduous task. This study aimed to predict the best cosolvents for the supercritical CO2 extraction of oleic and linoleic acids using the Hansen solubility theory. Calculations were performed for eight organic cosolvents used in food and pharmaceutical production. The best cosolvents for the solubilization of both fatty acids were short-chain alcohols, ethanol and methanol. The predictions were validated with bubble pressures of the mixtures with a 0.003 fatty acid molar fraction at temperatures of 313.2 K and 323.2 K. The experimental results agreed with the predictions. The effect of pressure was well predicted via the direct relationship between pressure and the solvent density. However, the impact of temperature was not properly foreseen because the variation of solute vapour pressure was not considered. The Hansen theory predicted that the miscibility enhancement of the solute in the supercritical mixture is maximum at low pressures and low cosolvent concentrations, as was experimentally confirmed.
dc.description.departmentDepto. de Química Física
dc.description.departmentDepto. de Ingeniería Química y de Materiales
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (España)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/76556
dc.identifier.citationTirado, Diego F., et al. «Prediction of the Best Cosolvents to Solubilise Fatty Acids in Supercritical CO2 Using the Hansen Solubility Theory». Chemical Engineering Science, vol. 190, noviembre de 2018, pp. 14-20. DOI.org (Crossref), https://doi.org/10.1016/j.ces.2018.06.017.
dc.identifier.doi10.1016/j.ces.2018.06.017
dc.identifier.issn0009-2509
dc.identifier.officialurlhttps://doi.org/10.1016/j.ces.2018.06.017
dc.identifier.urihttps://hdl.handle.net/20.500.14352/19398
dc.journal.titleChemical Engineering Science
dc.language.isoeng
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.projectIDresearch project CTQ2013-41781-P
dc.rights.accessRightsrestricted access
dc.subject.cdu66.0
dc.subject.keywordHansen solubility parameters
dc.subject.keywordSupercritical fluid extraction
dc.subject.keywordMiscibility
dc.subject.keywordCosolvent effect
dc.subject.keywordCarbon dioxide
dc.subject.ucmIngeniería química
dc.subject.unesco3303 Ingeniería y Tecnología Químicas
dc.titlePrediction of the best cosolvents to solubilise fatty acids in supercritical CO2 using the Hansen solubility theory
dc.typejournal article
dc.volume.number190
dspace.entity.typePublication
relation.isAuthorOfPublication08f9e67b-e7ba-420b-a651-37a03ba04f0c
relation.isAuthorOfPublicationf2587cb3-725d-4333-90ba-d4aac12ec04c
relation.isAuthorOfPublication.latestForDiscovery08f9e67b-e7ba-420b-a651-37a03ba04f0c
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