Logo do repositório
 
Publicação

Dry purification of ethanolic biodiesel through adsorption using almond shell based materials

2025Documento de conferência Acesso aberto
Ver registo simples
datacite.subject.fosEngenharia e Tecnologia::Engenharia Química
datacite.subject.fosCiências Agrárias::Biotecnologia Agrária e Alimentar
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorMezzalira, Melissa Giacomet
dc.contributor.authorGomes, Maria Carolina Sérgi
dc.contributor.authorQueiroz, Ana
dc.contributor.authorRibeiro, António E.
dc.contributor.authorBrito, Paulo
dc.date.accessioned2026-03-16T09:50:14Z
dc.date.available2026-03-16T09:50:14Z
dc.date.issued2025
dc.description.abstractPetroleum-based fuels and non-renewable sources remain dominant in the global energy supply, meeting 80% of global energy demand in 2023. However, using these non-renewable fuels results in significant emissions of pollutants into the atmosphere, including greenhouse gases such as carbon dioxide (CO2). In this context, biodiesel is a potential alternative to meet global energy demand as a substitute for non- renewable fuels, as itis considered one of the best alternatives to diesel due to its comparable properties, not requiring majoramendments in machines with combustion motors, biodegradability, and renewable advantages. Biodiesel is usually produced through a transesterification reaction using different sources of triglycerides, primarily edible vegetable oils. However, waste cooking oil (WCO) is an excellent feedstock alternative, as it is a waste product generated in significant quantities by the food industry, often improperly discarded, causing environmental harm. Biodiesel purification is another important step in the process, as contaminants such as glycerol can damage engines, requiring their removal before the fuel can be commercialized. Several purification methods can be applied, the most common being wet washing, which uses large amounts of water to solubilize glycerol and other impurities in biodiesel. However, more sustainable methods like dry washing involving adsorbent materials are currently under extensive study. Hence, this study aims to produce and characterize activated carbon derived from almond shells, evaluating its use in purifying the ethanolic biodiesel produced from WCO. In this work, biodiesel was produced via an ethanolic route with a 1:7.5 oil/ethanol molar ratio and NaOH catalyst load of 0.5%(w/w). Furthermore, the activated carbon was chemically activated with phosphoric acid (H3PO4) and carbonized at 550°C for 1 hour, achieving a carbonization yield of 59.4%(w/w). The materials were characterized by the determination of the point of zero charge (pHPZC) and the quantification of functional groups present on the material's surface. Activation with H₃PO₄ had an impact on the materials’ characteristics, as evidenced by the decrease, from 6.48 to 4.96, in the pHPZC value compared to that of the raw material, given that the number of acid groups on the surface of the materials exhibits higher values after activation. The activated carbon materials will be tested for their capacity to remove glycerol from crude ethanolic biodiesel, aiming to meet the quality standard specified by EN14214, which sets the maximum biodiesel free glycerol content at 0.02%(w/w).eng
dc.description.sponsorshipThis work was supported by national funds through FCT/MCTES (PIDDAC): UIDB/00690/2020 (DOI: 10.54499/UIDB/00690/2020) and UIDP/00690/2020 (DOI: 10.54499/UIDP/00690/2020); and SusTEC, LA/P/0007/2020 (DOI: 10.54499/LA/P/0007/2020).
dc.identifier.citationMezzalira, Melissa Giacomet; Gomes, Maria Carolina Sérgi; Queiroz, Ana; Ribeiro, António E.; Brito, Paulo (2025). Dry purification of ethanolic biodiesel through adsorption using almond shell based materials. In 9PYCheM – 9th Portuguese Young Chemists Meeting. Faro. ISBN 978-989-8124-46-3
dc.identifier.isbn978-989-8124-46-3
dc.identifier.urihttp://hdl.handle.net/10198/36077
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSociedade Portuguesa de Química
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectBiodiesel
dc.subjectEthanolic
dc.titleDry purification of ethanolic biodiesel through adsorption using almond shell based materialseng
dc.typeconference object
dspace.entity.typePublication
oaire.awardNumberUIDB/00690/2020
oaire.awardNumberUIDP/00690/2020
oaire.awardNumberLA/P/0007/2020
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.citation.conferenceDate2025
oaire.citation.conferencePlaceFaro
oaire.citation.endPage54
oaire.citation.startPage54
oaire.citation.title9PYCheM – 9th Portuguese Young Chemists Meeting
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameQueiroz
person.familyNameRibeiro
person.familyNameBrito
person.givenNameAna
person.givenNameAntónio E.
person.givenNamePaulo
person.identifier.ciencia-id2611-D40C-3472
person.identifier.ciencia-id3211-D5B0-870D
person.identifier.ciencia-idA31A-D845-A6E2
person.identifier.orcid0000-0003-4761-0618
person.identifier.orcid0000-0003-4569-7887
person.identifier.orcid0000-0003-1805-0252
person.identifier.ridO-8367-2015
person.identifier.scopus-author-id23390701300
person.identifier.scopus-author-id31168231800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication508436a2-5db1-481e-9c48-eab160333d61
relation.isAuthorOfPublication52666376-f100-4407-87ef-dc5df3613761
relation.isAuthorOfPublication0370deac-dc4e-4b3d-8e1f-fc2d117794d2
relation.isAuthorOfPublication.latestForDiscovery0370deac-dc4e-4b3d-8e1f-fc2d117794d2
relation.isProjectOfPublication29718e93-4989-42bb-bcbc-4daff3870b25
relation.isProjectOfPublication0aac8939-28c2-46f4-ab6b-439dba7f9942
relation.isProjectOfPublication6255046e-bc79-4b82-8884-8b52074b4384
relation.isProjectOfPublication.latestForDiscovery29718e93-4989-42bb-bcbc-4daff3870b25

Ficheiros

Principais
A mostrar 1 - 1 de 1
Miniatura
Nome:
Dry purification of ethanolic.pdf
Tamanho:
2.78 MB
Formato:
Adobe Portable Document Format
Ver/Abrir
Licença
A mostrar 1 - 1 de 1
Miniatura indisponível
Nome:
license.txt
Tamanho:
1.75 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Ver/Abrir

Coleções

CIMO - Resumos em Proceedings Não Indexados à WoS/Scopus