Repository logo
 
Publication

Biodiesel production from waste frying oils over lime catalysts

2013-08Journal article Open access
Simple item page
dc.contributor.authorPuna, Jaime
dc.contributor.authorCorreia, Maria Joana Neiva
dc.contributor.authorDias, Ana Paula Soares
dc.contributor.authorGomes, João
dc.contributor.authorBordado, João
dc.date.accessioned2013-11-01T15:31:36Z
dc.date.available2013-11-01T15:31:36Z
dc.date.issued2013-08
dc.description.abstractBiodiesel production from semi-refined oils (SRO) and waste frying oils (WFO) was studied using commercial CaO as heterogeneous catalyst. The methanolysis tests were carried out in mild reaction conditions (62 A degrees C, atmospheric pressure). With such conditions, SRO (soybean and rapeseed) allowed to produce a biodiesel containing 97-98 % of methyl esters (FAME), whereas WFO only provided 86-87 % of FAME. The lower FAME yield for WFO oil is ascribable to the partial neutralization of the catalyst by free fatty acids. Also, soaps formation from the WFO oil reduced the weight yield of the oil phase (containing FAME) obtained and increased the MONG content of the glycerin phase. The catalysts stability tests showed high stability even when WFO oil was processed. Catalytic tests performed with blends of WFO/semi-refined oils showed blending as a good strategy to process low value raw oils with minor decay of the catalyst performance. Both WFO and semi-refined oils showed S-shape kinetics curves thus discarding significant differences of the reaction mechanisms.por
dc.identifier.citationPUNA, Jaime Filipe; CORREIA, Maria Joana Neiva; DIAS, Ana Paula Soares; GOMES, Joao; BORDADO, Joao - Biodiesel production from waste frying oils over lime catalysts. Reaction Kinetics Mechanisms and Catalysis. ISSN 1878-5190. Vol. 109, nr. 2 (2013), p. 405-415.por
dc.identifier.issn1878-5190
dc.identifier.other10.1007/s11144-013-0557-2
dc.identifier.urihttp://hdl.handle.net/10400.21/2840
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringerpor
dc.subjectBiodieselpor
dc.subjectWaste frying oilspor
dc.subjectCaO catalystpor
dc.subjectOil aciditypor
dc.subjectS-shape kineticspor
dc.subjectNear-Infrared Spectroscopypor
dc.subjectHeterogeneous Catalystspor
dc.subjectSoybean Oilpor
dc.subjectCalcium-Oxidepor
dc.subjectCooking Oilpor
dc.subjectSolid Basepor
dc.subjectTransesterificationpor
dc.subjectHydrotalcitespor
dc.subjectQualitypor
dc.subjectModelspor
dc.titleBiodiesel production from waste frying oils over lime catalystspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceDordrechtpor
oaire.citation.endPage415por
oaire.citation.issue2por
oaire.citation.startPage405por
oaire.citation.titleReaction Kinetics Mechanisms and Catalysispor
oaire.citation.volume109por
person.familyNamePuna
person.familyNameGomes
person.familyNameBordado
person.givenNameJaime
person.givenNameJoão
person.givenNameJoão
person.identifier790253
person.identifier60203
person.identifier.ciencia-idEE14-5CB2-AF04
person.identifier.ciencia-id0212-E6D6-566C
person.identifier.ciencia-id5A1C-D29F-324A
person.identifier.orcid0000-0002-2763-3655
person.identifier.orcid0000-0003-2579-6669
person.identifier.orcid0000-0002-9832-6433
person.identifier.ridA-6442-2011
person.identifier.ridM-1952-2014
person.identifier.scopus-author-id24402152700
person.identifier.scopus-author-id56113031900
person.identifier.scopus-author-id6603731772
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationcc1ba86f-9699-4622-a467-dece54231697
relation.isAuthorOfPublicatione44cd72e-bcbb-4612-a274-60cb1915bc0c
relation.isAuthorOfPublicatione0b6d47e-98c2-47c2-a48c-45041d3fb841
relation.isAuthorOfPublication.latestForDiscoverye44cd72e-bcbb-4612-a274-60cb1915bc0c

Files

Original bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
Biodiesel production from waste frying oils over lime catalysts.rep.pdf
Size:
195.52 KB
Format:
Adobe Portable Document Format
Download
No Thumbnail Available
Name:
Biodiesel production from waste frying oils over lime catalysts.pdf
Size:
842.94 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ISEL - Eng. Quim. Biol. - Artigos