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Pine Nutshells and Their Biochars as Sources of Chemicals, Fuels, Activated Carbons, and Electrode Materials

2024-07Artigo científico Acesso aberto
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dc.contributor.authorSen, Umut
dc.contributor.authorRodrigues, João F. G.
dc.contributor.authorAlmeida, Daiana
dc.contributor.authorFernandes, Ângela
dc.contributor.authorGonçalves, Margarida
dc.contributor.authorMartins, Marta
dc.contributor.authorSantos, Diogo M. F.
dc.contributor.authorPereira, Helena
dc.date.accessioned2025-08-08T09:47:13Z
dc.date.available2025-08-08T09:47:13Z
dc.date.issued2024-07
dc.description.abstractPine nutshells (PNSs) are lignocellulosic waste materials with limited use in domestic heating. However, a biorefinery approach may be applied to fractionate PNSs and produce chemicals, materials, and improved solid fuels. In this study, we fractionated PNSs and produced antioxidant extracts, lignins, polysaccharides, chars, and activated carbons and analyzed their potential applica- tions. Pyrolytic kinetic modeling as an alternative method to chemical fractionation was also tested. The results showed that the PNS contains low amounts of extracts with weak thiobarbituric acid reactive substances (TBARS) antioxidant properties, while its lignin content is remarkable (50.5%). Pyrolytic kinetic modeling was comparable to wet chemical analysis for estimating lignin yield. Moderate-temperature pyrolysis of the PNS resulted in a 23% char yield. The PNS chars showed improved fuel characteristics, retained 36% water, and leached 151 mg/L potassium into the water. The steam activation of PNS biochars at 750 ◦C resulted in oxygen-enriched activated carbons with specific surface areas up to 467 m2/g. The overall results indicate promising biochar applications of the PNS for soil amendment and supercapacitor uses.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSen, U.; Rodrigues, J.F.G.; Almeida, D.; Fernandes, Â.; Gonçalves, M.; Martins, M.; Santos, D.M.F.; Pereira, H. Pine Nutshells and Their Biochars as Sources of Chemicals, Fuels, Activated Carbons, and Electrode Materials. Processes 2024, 12, 1603. https://doi.org/10.3390/pr12081603pt_PT
dc.identifier.doi10.3390/pr12081603pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/102728
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationForest Research Centre
dc.relation.publisherversionhttps://www.mdpi.com/journal/processespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectnutshellpt_PT
dc.subjectTBARSpt_PT
dc.subjectkinetic analysispt_PT
dc.subjectbiocharpt_PT
dc.subjectactivated carbonpt_PT
dc.subjectelectrochemical propertiespt_PT
dc.titlePine Nutshells and Their Biochars as Sources of Chemicals, Fuels, Activated Carbons, and Electrode Materialspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleForest Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017%2F2018) - Financiamento Programático/UIDP%2F04540%2F2020/PT
oaire.citation.issue8pt_PT
oaire.citation.startPage1603pt_PT
oaire.citation.titleProcessespt_PT
oaire.citation.volume12pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamConcurso para Atribuição do Estatuto e Financiamento de Laboratórios Associados (LA)
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamConcurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017/2018) - Financiamento Programático
oaire.fundingStreamConcurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017/2018) - Financiamento Programático
person.familyNameSen
person.familyNameMargarida Nunes Pereira
person.givenNameAli Umut
person.givenNameHelena
person.identifier.ciencia-idBA18-7608-8655
person.identifier.ciencia-id4317-A0D2-2E2A
person.identifier.orcid0000-0003-3734-466X
person.identifier.orcid0000-0002-5393-4443
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project.funder.nameFundação para a Ciência e a Tecnologia
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project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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