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dc.rights.licenseAttribution 4.0 International*
dc.contributor.authorShevtsova, Valentina
dc.contributor.otherGaponenko, Yuri
dc.contributor.otherMialdun, Aliaksandr
dc.date.accessioned2021-01-29T11:50:02Z
dc.date.available2021-01-29T11:50:02Z
dc.date.issued2020
dc.identifier.issn1420-3049en
dc.identifier.otherhttps://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=162340en
dc.identifier.urihttp://hdl.handle.net/20.500.11984/5178
dc.description.abstractThis study aims at contributing to quinine extraction using supercritical CO2 and ethanol as a co-solvent. The diffusion coefficients of quinine in supercritical CO2 are measured using the Taylor dispersion technique when quinine is pre-dissolved in ethanol. First, the diffusion coefficients of pure ethanol in the supercritical state of CO2 were investigated in order to get a basis for seeing a relative change in the diffusion coefficient with the addition of quinine. We report measurements of the diffusion coefficients of ethanol in scCO2 in the temperature range from 304.3 to 343 K and pressures of 9.5, 10 and 12 MPa. Next, the diffusion coefficients of different amounts of quinine dissolved in ethanol and injected into supercritical CO2 were measured in the same range of temperatures at p = 12 Mpa. At the pressure p = 9.5 MPa, which is close to the critical pressure, the diffusion coefficients were measured at the temperature, T = 343 K, far from the critical value. It was found that the diffusion coefficients are significantly dependent on the amount of quinine in a small range of its content, less than 0.1%. It is quite likely that this behavior is associated with a change in the spatial structure, that is, the formation of clusters or compounds, and a subsequent increase in the molecular weight of the diffusive substance.es
dc.language.isoengen
dc.publisherMDPIen
dc.rights© 2020 by the authors. Licensee MDPIen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectsupercritical CO2en
dc.subjectquinineen
dc.subjectdiffusion coefficientsen
dc.subjectethanol cosolventen
dc.subjectTaylor dispersionen
dc.titleDiffusion of Quinine with Ethanol as a Co-Solvent in Supercritical CO2en
dc.typeinfo:eu-repo/semantics/articleen
dcterms.accessRightsinfo:eu-repo/semantics/openAccessen
dcterms.sourceMoleculesen
dc.description.versioninfo:eu-repo/semantics/publishedVersionen
local.contributor.groupMecánica de fluidoses
local.description.peerreviewedtrueen
local.identifier.doihttps://doi.org/10.3390/molecules25225372en
local.rights.publicationfeeAPCen
local.rights.publicationfeeamount1857 EUR 2000 CHFen
local.contributor.otherinstitutionUniversité Libre de Bruxelleses
local.contributor.otherinstitutionIkerbasquees
local.source.detailsVol. 25. N. 22. N. artículo 5372, 2020en


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International