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An association UNIFAC model for aqueous and alcohol solutions of sugars

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dc.contributor.authorFerreira, Olga
dc.contributor.authorMacedo, Eugénia A.
dc.date.accessioned2010-02-25T15:01:15Z
dc.date.available2010-02-25T15:01:15Z
dc.date.issued2002
dc.description.abstractIn this work, a modified UNIFAC model [1] that explicitly takes into account association effects is applied to mixtures containing common sugars, alcohols and water. Following the same strategy adopted before [2], four residual groups were defined to represent the sugars family: the pyranose ring (PYR), the furanose ring (FUR), the osidic bond (-O-) and the hydroxyl ring group (OH ring) [2]. For the association term, a general two sites OH associating group is used to represent association effects in these solutions, allowing a straightforward extension to multicomponent mixtures. Correlation of both solvent activity properties (water activities, vapour pressures, boiling and freezing points of aqueous D-glucose and D-fructose solutions) and sugars (D-fructose, D-glucose and sucrose) solubility in water, ethanol and methanol give very good results. Satisfactory predictions are obtained for vapour-liquid equilibrium and solid-liquid equilibrium of ternary and quaternary mixtures of sugars in mixed solvents.pt
dc.identifier.citationFerreira, Olga; Macedo, Maria E. (2002). An association UNIFAC model for aqueous and alcohol solutions of sugars. In 19th European Conference on Applied Thermodynamics. Santorini, Grécia. p. 311-315.pt
dc.identifier.urihttp://hdl.handle.net/10198/2169
dc.language.isoengpt
dc.titleAn association UNIFAC model for aqueous and alcohol solutions of sugarspt
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceSantorini, Gréciapt
oaire.citation.endPage315pt
oaire.citation.startPage311pt
oaire.citation.titleProceedings of the 19th European Conference on Applied Thermodynamics - ESAT2002pt
person.familyNameFerreira
person.givenNameOlga
person.identifier.ciencia-id9F1D-C75A-4A54
person.identifier.orcid0000-0001-8414-3479
person.identifier.ridM-4567-2013
person.identifier.scopus-author-id57203083219
rcaap.rightsopenAccesspt
rcaap.typeconferenceObjectpt
relation.isAuthorOfPublication59e0c608-0c21-4191-af5e-529d21970399
relation.isAuthorOfPublication.latestForDiscovery59e0c608-0c21-4191-af5e-529d21970399

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