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Evaluation and kinetic study of alkaline ionic liquid for biodiesel production through transesterification of sunflower oil

2022Artigo científico Acesso aberto
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dc.contributor.authorLima, Ana Carolina Coelho
dc.contributor.authorHachemane, Khadidja
dc.contributor.authorRibeiro, António E.
dc.contributor.authorQueiroz, Ana
dc.contributor.authorGomes, Maria Carolina Sérgi
dc.contributor.authorBrito, Paulo
dc.date.accessioned2022-05-30T09:30:08Z
dc.date.available2022-05-30T09:30:08Z
dc.date.issued2022
dc.description.abstractBiodiesel production is performed in the industry by alkaline transesterification of oils with a low amount of free fatty acids. In order to reduce the disposal of conventional catalysts used industrially, ionic liquids (ILs) have been studied to be applied as catalysts in transesterification since they can be recovered and reused in subsequent reaction cycles. In this work, the ionic liquid choline hydroxide (ChOH) was successfully applied as a catalyst for the transesterification reaction of triacylglycerols present in sunflower oil with methanol. A kinetic modeling study under the specific conditions of 2 wt% catalyst dosage, 1:10 oil/methanol molar ratio, for 0–120 min at 35–65 ℃ was conducted, and liquid–liquid extraction with water/butanol was evaluated as a process to recover the IL. A 95.0% ester yield content was achieved in this work for a short reaction time (30 min). Furthermore, the results of the kinetic study demonstrated that a first-order model was the best fit for the reaction with a rate constant (k) estimated as 0.1182 min􀀀 1 and activation energy (Ea) of 13.64 kJ/mol. For the tested conditions, the complete recovery of the IL using liquid–liquid extraction did not occur since it is noted the presence of ChOH in both phases.pt_PT
dc.description.sponsorshipThe authors acknowledge Paula Plasencia and Maria João Afonso for their assistance in the laboratory. Furthermore, the authors are grateful to the Foundation for Science and Technology (FCT, Portugal) and FEDER under Programme PT2020 for financial support to CIMO (UIDB/0690/2020).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLima, Ana Carolina; Hachemane, Khadidja; Ribeiro, António E.; Queiroz, Ana; Gomes, Maria Carolina Sérgi; Brito, Paulo (2022). Evaluation and kinetic study of alkaline ionic liquid for biodiesel production through transesterification of sunflower oil. Fuel. ISSN 0016-2361. 324, p. 1-8pt_PT
dc.identifier.doi10.1016/j.fuel.2022.124586pt_PT
dc.identifier.issn0016-2361
dc.identifier.urihttp://hdl.handle.net/10198/25554
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMountain Research Center
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBiodiesel productionpt_PT
dc.subjectTransesterificationpt_PT
dc.subjectIonic liquidspt_PT
dc.subjectCholine Hydroxidept_PT
dc.titleEvaluation and kinetic study of alkaline ionic liquid for biodiesel production through transesterification of sunflower oilpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMountain Research Center
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.citation.startPage124586pt_PT
oaire.citation.titleFuelpt_PT
oaire.citation.volume324pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameRibeiro
person.familyNameQueiroz
person.familyNameBrito
person.givenNameAntónio E.
person.givenNameAna
person.givenNamePaulo
person.identifier.ciencia-id3211-D5B0-870D
person.identifier.ciencia-id2611-D40C-3472
person.identifier.ciencia-idA31A-D845-A6E2
person.identifier.orcid0000-0003-4569-7887
person.identifier.orcid0000-0003-4761-0618
person.identifier.orcid0000-0003-1805-0252
person.identifier.ridO-8367-2015
person.identifier.scopus-author-id23390701300
person.identifier.scopus-author-id31168231800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication52666376-f100-4407-87ef-dc5df3613761
relation.isAuthorOfPublication508436a2-5db1-481e-9c48-eab160333d61
relation.isAuthorOfPublication0370deac-dc4e-4b3d-8e1f-fc2d117794d2
relation.isAuthorOfPublication.latestForDiscovery508436a2-5db1-481e-9c48-eab160333d61
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relation.isProjectOfPublication.latestForDiscovery29718e93-4989-42bb-bcbc-4daff3870b25

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