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Study on the glycerolysis reaction of high free fatty acid oils for use as biodiesel feedstock

2011-06Journal article Open access
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dc.contributor.authorFelizardo, Pedro
dc.contributor.authorMachado, João
dc.contributor.authorVergueiro, Daniel
dc.contributor.authorCorreia, M. Joana N.
dc.contributor.authorGomes, João
dc.contributor.authorBordado, João Moura
dc.date.accessioned2013-02-17T12:35:23Z
dc.date.available2013-02-17T12:35:23Z
dc.date.issued2011-06
dc.description.abstractBiodiesel is the main alternative to fossil diesel and it may be produced from different feedstocks such as semi-refined vegetable oils, waste frying oils or animal fats. However, these feedstocks usually contain significant amounts of free fatty acids (FFA) that make them inadequate for the direct base catalyzed transesterification reaction (where the FFA content should be lower than 4%). The present work describes a possible method for the pre-treatment of oils with a high content of FFA (20 to 50%) by esterification with glycerol. In order to reduce the FFA content, the reaction between these FFA and an esterification agent is carried out before the transesterification reaction. The reaction kinetics was studied in terms of its main factors such astemperature, % of glycerin excess, % of catalyst used, stirring velocity and type of catalyst used. The results showed that glycerolysis is a promising pretreatment to acidic oils or fats (> 20%) as they led to the production of an intermediary material with a low content of FFA that can be used directly in thetransesterification reaction for the production of biodiesel. (C) 2011 Elsevier B.V. All rights reserved.por
dc.identifier.citationFELIZARDO, Pedro; MACHADO, João; VERGUEIRO, Daniel; CORREIA, M. Joana N.; GOMES, João Pereira; BORDADO, João Moura - Study on the glycerolysis reaction of high free fatty acid oils for use as biodiesel feedstock. Fuel Processing Technology. ISSN 0378-3820. Vol. 92. n.º 6 (2011) p. 1225-1229.por
dc.identifier.issn0378-3820
dc.identifier.urihttp://hdl.handle.net/10400.21/2246
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier Science BVpor
dc.subjectBiodiesel feedstockpor
dc.subjectAcid oilspor
dc.subjectSoap-stockspor
dc.subjectGlycerolysispor
dc.subjectNear-infrared spectroscopypor
dc.subjectEsterspor
dc.titleStudy on the glycerolysis reaction of high free fatty acid oils for use as biodiesel feedstockpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceAmsterdampor
oaire.citation.endPage1229por
oaire.citation.issue6por
oaire.citation.startPage1225por
oaire.citation.titleFuel Processing Technologypor
oaire.citation.volume92por
person.familyNameGomes
person.givenNameJoão
person.identifier60203
person.identifier.ciencia-id0212-E6D6-566C
person.identifier.orcid0000-0003-2579-6669
person.identifier.scopus-author-id56113031900
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicatione44cd72e-bcbb-4612-a274-60cb1915bc0c
relation.isAuthorOfPublication.latestForDiscoverye44cd72e-bcbb-4612-a274-60cb1915bc0c

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