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Calcium rich food wastes based catalysts for biodiesel production

2017-07Conference object Restricted access
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dc.contributor.authorCatarino, Maria Alice
dc.contributor.authorRamos, M.
dc.contributor.authorSoares Dias, A. P.
dc.contributor.authorSantos, Maria Teresa
dc.contributor.authorPuna, Jaime
dc.contributor.authorGomes, João
dc.date.accessioned2017-11-24T14:31:34Z
dc.date.available2017-11-24T14:31:34Z
dc.date.issued2017-07
dc.description.abstractBiodiesel produced from food wastes can help to solve several environmental issues: anthropogenic carbon emissions due to fossil fuels combustion and waste management. Biodiesel was produced using waste frying oils (WFO) and calcium rich food wastes such as mollusk, shrimp, eggs shells and cuttlebone to produce calcium based heterogeneous catalysts by calcination. The characterization of chalky white calcined powders by XRD showed diffraction lines typical of lime but some samples were slightly contaminated with calcite. The powders with low crystallinity showed high hydration rate presenting XRD features ascribable to nanocrystals of calcium hydroxide. The post reaction samples presented mainly lines due to calcium diglyceroxide and methoxide. Thermograms of used catalysts showed some weight loss of these calcium compounds, confirming the presence of such phases. All prepared catalysts were effective in catalyzing the methanolysis of soybean oil. A FAME yield around 96% was obtained after 2.5 h of reaction. When using WFO, the FAME yield was only 65% with simultaneous production of soap. The use of WFO and soybean oil mixtures attenuates the loss of catalytic performances. The obtained glycerin's presented a light color characteristic of heterogeneous catalyzed processes. FTIR spectra of glycerin's showed some features belonging to matter organic non glycerin and methanol. The catalyst reutilization without intermediate reactivation indicated that catalysts are somewhat stable. When WFO was used, the reused catalysts showed improved performance probably due to the formation of calcium diglyceroxide. Nevertheless, calcium diglyceroxide is bound to promote homogeneous catalysis and consequent deactivation.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCATARIN O, M. [et al] - Calcium rich food wastes based catalysts for biodiesel production. Waste and Biomass Valorization. ISSN 1877-2641. Vol. 8, N.º 5 (2017), pp. 1699-1707pt_PT
dc.identifier.doi10.1007/s12649-017-9988-8pt_PT
dc.identifier.issn1877-2641
dc.identifier.issn1877-265X
dc.identifier.urihttp://hdl.handle.net/10400.21/7582
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.subjectFood wastept_PT
dc.subjectBiodieselpt_PT
dc.subjectWFOpt_PT
dc.subjectCalcium catalystspt_PT
dc.subjectDeactivationpt_PT
dc.titleCalcium rich food wastes based catalysts for biodiesel productionpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FEMS-ENE%2F4865%2F2014/PT
oaire.citation.conferencePlaceSantander, Espanha de 10-12 julho2015pt_PT
oaire.citation.endPage1707pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage1699pt_PT
oaire.citation.title9th International Conference on the Environmental and Technical Implications of Construction with Alternative Materials (WASCON) - Resource Efficiency in Constructionpt_PT
oaire.citation.volume8pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameCatarino
person.familyNameSantos
person.familyNamePuna
person.familyNameGomes
person.givenNameMaria Alice
person.givenNameMaria Teresa
person.givenNameJaime
person.givenNameJoão
person.identifier790253
person.identifier60203
person.identifier.ciencia-idEE14-5CB2-AF04
person.identifier.ciencia-id0212-E6D6-566C
person.identifier.orcid0000-0001-7951-5100
person.identifier.orcid0000-0001-8976-6691
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
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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