An experimental methodology to validate the use of hydroethanolic mixtures as suspending medium / modifier for the supercritical CO2 extraction of suspensions

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dc.contributor.authorMamani, Marco Antonio
dc.contributor.authordel Valle, Jose Manuel
dc.contributor.authorAravena, Paulo
dc.contributor.authorCanales, Roberto
dc.date.accessioned2025-01-20T16:04:19Z
dc.date.available2025-01-20T16:04:19Z
dc.date.issued2025
dc.description.abstractWe developed a methodology to study the extraction of high-value solutes directly from suspensions of finely disrupted substrates. For that, we modelled the high-pressure phase equilibrium for the ternary (CO2 + ethanol + water) system using experimental literature data. Different compositions of hydroethanolic mixture and CO2 were loaded into an extraction vessel set at 30-35 MPa and 40-50 degrees C during static extraction, and a gaseous mixture with the composition of the CO2-rich gaseous phase in the extraction vessel was continuously fed during dynamic extraction. Losses of the fed hydroethanolic mixture occurred mainly during dynamic extraction (10-30 wt%) and were properly distributed to account for actual flows and compositions of experimental streams. Mostly, equilibrium conditions were reached following about 1 h of the 2-h dynamic extraction, and good reproducibility was achieved. In conclusion, equilibrium is reached in which two phases coexist in equilibrium within the extraction vessel: a water-rich liquid phase and a CO2-rich gaseous phase.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.supflu.2024.106423
dc.identifier.eissn1872-8162
dc.identifier.issn0896-8446
dc.identifier.urihttps://doi.org/10.1016/j.supflu.2024.106423
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/89709
dc.identifier.wosidWOS:001355924700001
dc.language.isoen
dc.revistaJournal of supercritical fluids
dc.rightsacceso restringido
dc.subjectAqueous ethanol
dc.subjectExtraction
dc.subjectModifier
dc.subjectSteady-state conditions
dc.subjectSuspensions
dc.titleAn experimental methodology to validate the use of hydroethanolic mixtures as suspending medium / modifier for the supercritical CO2 extraction of suspensions
dc.typeartículo
dc.volumen216
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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