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Solvent assisted biodiesel production by co-processing beef tallow and soybean oil over calcium catalysts

2020-11Journal article Open access
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dc.contributor.authorDias, Ana Paula Soares
dc.contributor.authorRamos, Marta
dc.contributor.authorCatarino, Mónica Inês
dc.contributor.authorPuna, Jaime
dc.contributor.authorGomes, João
dc.date.accessioned2019-12-12T11:49:06Z
dc.date.available2019-12-12T11:49:06Z
dc.date.issued2020-11
dc.description.abstractDue to sustainability issues, biodiesel must be produced from low-grade fats and the conventional homogeneously-catalyzed processes must be replaced by more efficient and more profitable production processes such as heterogeneous ones. Biodiesel (fatty acids methyl esters, FAME) was produced from a mixture (50 wt%) of soybean oil and non-edible beef tallow over heterogeneous calcium-based catalysts obtained by calcination of scallop shells. In order to improve the catalytic performances, solvent assisted methanolysis was conducted using alcohols (ethanol, 1-propanol, isopropanol and isobutanol), acetone, methylcyclohexane, and tetrahydrofuran (THF) with Vmethanol/Vsolvent = 2.8. Catalytic data revealed that alcohol solvents adsorb competitively with methanol on the catalyst active sites reducing the FAME yield due to their slower alcoholysis rates. Hexane and methylcyclohexane are inadequate for methanolysis reactions since they are immiscible with methanol. THF and acetone are immiscible with the co-produced glycerin, which favors methyl esters formation by displacing the chemical equilibrium towards reaction products. Acetone performs better than THF (FAME yield gain of 14% against 3%) because of its higher miscibility with methanol. THF was the most effective solvent to avoid fat adsorption on the catalyst surface, a key factor for catalyst stability, and to improve the glycerin purity.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDIAS, Ana Paula Soares; [et al] – Solvent assisted biodiesel production by co-processing beef tallow and soybean oil over calcium catalysts. Waste and Biomass Valorization. ISSN 1877-2641. Vol. 11, N.º 11 (2020), pp. 6249-6259pt_PT
dc.identifier.doihttps://doi.org/10.1007/s12649-019-00903-7pt_PT
dc.identifier.issn1877-2641
dc.identifier.urihttp://hdl.handle.net/10400.21/10842
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationPTDC/EMSENE/4865/2014 - FCTpt_PT
dc.relationUID/EMS/50022/2019 - FCTpt_PT
dc.relation.publisherversionhttps://link.springer.com/content/pdf/10.1007/s12649-019-00903-7.pdfpt_PT
dc.subjectBiodieselpt_PT
dc.subjectSustainabilitypt_PT
dc.subjectLow grade fatspt_PT
dc.subjectCalcium catalystpt_PT
dc.subjectSolventspt_PT
dc.subjectGlycerin puritypt_PT
dc.titleSolvent assisted biodiesel production by co-processing beef tallow and soybean oil over calcium catalystspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage6259pt_PT
oaire.citation.issue11
oaire.citation.startPage6249pt_PT
oaire.citation.titleWaste and Biomass Valorizationpt_PT
oaire.citation.volume11
person.familyNameVieira Soares Pereira Dias
person.familyNameRamos
person.familyNameCatarino
person.familyNamePuna
person.familyNameGomes
person.givenNameAna Paula
person.givenNameMarta
person.givenNameMónica Inês
person.givenNameJaime
person.givenNameJoão
person.identifier790253
person.identifier60203
person.identifier.ciencia-id7711-D804-97B8
person.identifier.ciencia-idF813-1438-B3B9
person.identifier.ciencia-idEE14-5CB2-AF04
person.identifier.ciencia-id0212-E6D6-566C
person.identifier.orcid0000-0002-4585-470X
person.identifier.orcid0000-0003-4967-4850
person.identifier.orcid0000-0002-3215-9505
person.identifier.orcid0000-0002-2763-3655
person.identifier.orcid0000-0003-2579-6669
person.identifier.ridA-6442-2011
person.identifier.scopus-author-id24402152700
person.identifier.scopus-author-id56113031900
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationa222a978-68bc-4036-98ca-a85d54aff4aa
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