Biodiesel production from vegetal oil and ethanol via transesterification in supercritical conditions

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dc.contributor.advisorOrcidhttps://orcid.org/0000-0001-6764-6947
dc.contributor.advisorOrcidhttps://orcid.org/0000-0002-2234-7182
dc.contributor.authorSIDI NETO, V.
dc.contributor.authorDERENZO, S.
dc.contributor.authorMARIN, M. P. DE A.
dc.contributor.authorLuis Novazzi
dc.contributor.authorJoão Guilherme Rocha Poço
dc.date.accessioned2023-09-01T06:04:20Z
dc.date.available2023-09-01T06:04:20Z
dc.date.issued2023-08-03
dc.description.abstract© 2023, The Author(s) under exclusive licence to Associação Brasileira de Engenharia Química.Biodiesel, which is derived from renewable feedstock, has potential to replace fossil diesel. In this study, biodiesel production was carried out through the transesterification of soybean oil with ethanol (anhydrous and hydrated) under supercritical conditions in a batch reactor, with a temperature range of 280–340 °C and an oil/alcohol molar ratio of 1:40. The effects of both anhydrous and hydrated ethanol on the reaction were evaluated, as well as the direct esterification of oleic acid to produce ethyl ester. A first-order reversible kinetic model was proposed to describe the transesterification process. The results showed a good agreement between experimental data and the model. It was observed that temperature has an important effect on ester yield and hydrated ethanol improved this yield. After 120 min of reaction time at 310 °C with hydrated ethanol, transesterification led to 89.7% of ethyl ester. When compared to anhydrous ethanol, forward rate constants of hydrated ethanol suggested that water may have a catalytic effect on transesterification. Although the transesterification of soybean oil and ethanol under supercritical conditions is nearly irreversible at 280 °C, the reaction is limited by equilibrium at temperatures equal to or higher than 310 °C.
dc.identifier.citationSIDI NETO, V.; DERENZO, S.; MARIN, M. P. DE A.; NOVAZZI, L. F.; POÇO, J. G. R. Biodiesel production from vegetal oil and ethanol via transesterification in supercritical conditions. Brazilian Journal of Chemical Engineering, aug. 2023.
dc.identifier.doi10.1007/s43153-023-00379-y
dc.identifier.issn0104-6632
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/5087
dc.relation.ispartofBrazilian Journal of Chemical Engineering
dc.rightsAcesso Restrito
dc.subject.otherlanguageBiodiesel
dc.subject.otherlanguageEthanol
dc.subject.otherlanguageSoybean oil
dc.subject.otherlanguageSupercritical synthesis
dc.subject.otherlanguageTransesterification
dc.titleBiodiesel production from vegetal oil and ethanol via transesterification in supercritical conditions
dc.typeArtigo
fei.scopus.citations0
fei.scopus.eid2-s2.0-85168120005
fei.scopus.subjectAnhydrous ethanol
fei.scopus.subjectBiodiesel production
fei.scopus.subjectEthyl esters
fei.scopus.subjectHydrated ethanol
fei.scopus.subjectRenewable feedstocks
fei.scopus.subjectSupercritical
fei.scopus.subjectSupercritical condition
fei.scopus.subjectSupercritical synthesis
fei.scopus.subjectTemperature range
fei.scopus.subjectTransesterifications
fei.scopus.updated2024-12-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85168120005&origin=inward
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