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Oxidative denitrogenation using sustainable carbon nanotubes: Effect of reaction conditions on hydrogen peroxide efficiency

2026Artigo científico Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Química
datacite.subject.sdg04:Educação de Qualidade
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg13:Ação Climática
dc.contributor.authorRoman, Fernanda F.
dc.contributor.authorSilva, Adriano S.
dc.contributor.authorDíaz de Tuesta, Jose Luis
dc.contributor.authorSilva, Adrián
dc.contributor.authorFaria, Joaquim L.
dc.contributor.authorGomes, Helder T.
dc.date.accessioned2026-03-10T15:33:36Z
dc.date.available2026-03-10T15:33:36Z
dc.date.issued2026
dc.description.abstractNitrogenated compounds in fuels contribute significantly to NOₓ emissions, prompting the need for efficient and sustainable removal technologies. Oxidative denitrogenation (ODN) has emerged as an alternative or complement to hydrodenitrogenation (HDN) to remove undesired nitrogenated compounds. While ODN requires significantly milder conditions compared to HDN, it relies on the use of hydrogen peroxide as oxidant source. Most works report the removal of nitrogenated compounds but neglect the rate of consumption and efficiency of use of hydrogen peroxide. In this work, the operational conditions during ODN (hydrogen peroxide concentration, catalyst concentration, temperature, and pH) were optimized to maximize the removal of nitrogenated compound, using quinoline as model compound, from a simulated fuel. Two sustainability-oriented parameters were introduced: (i) the abatement of total organic carbon and (ii) the efficiency of hydrogen peroxide consumption. Under optimum conditions ([H2O2]0 = 12 g L−1, 70 °C, [cat] = 2.5 g L−1, pH0 = 3.0), the process achieved 89 % quinoline removal, 35 % TOC abatement, and more than 77 % H2O2 consumption efficiency. These results demonstrate the potential of ODN to operate under mild conditions while maintaining high oxidant efficiency for model nitrogen-containing fuel compound, contributing to cleaner and more sustainable fuel purification strategies.eng
dc.description.sponsorshipThis work was supported by national funds through FCT/MCTES (PIDDAC): CIMO UID/00690/2025 (10.54499/UID/00690/2025) and UID/PRR/00690/2025 (10.54499/UID/PRR/00690/2025); SusTEC, LA/P/0007/2020 (DOI: 10.54499/LA/P/0007/2020). This research was also supported by Fundação para a Ciência e a Tecnologia, I.P./MCTES through national funds: LSRE-LCM, UID/50020/2025; and ALiCE, LA/P/0045/2020 (DOI: 10.54499/LA/P/0045/2020). Fernanda F. Roman acknowledges the national funding by FCT and the European Social Fund, FSE, through the individual research grant SFRH/BD/143224/2019. Adriano S. Silva thanks the financial support from FCT under MIT Portugal Program with Ph.D. grant SFRH/BD/151346/2021. J. L. Diaz de Tuesta acknowledges the research grant (2022-T1/AMB23946) by the program of Atracción al Talento of Comunidad de Madrid (Spain). The authors are grateful to Sociedade Ponto Verde for the financial support through the project “Estudo técnico-económico para a valorização de resíduos de embalagens plásticas em nanotubos de carbono."
dc.identifier.citationRoman, Fernanda F.; Silva, Adriano S.; Díaz de Tuesta, Jose Luis; Silva, Adrián; Faria, Joaquim L.; Gomes, Helder T. (2026). Oxidative denitrogenation using sustainable carbon nanotubes: Effect of reaction conditions on hydrogen peroxide efficiency. Journal of Environmental Chemical Engineering. ISSN 2213-2929. 14:2, p. 1-15
dc.identifier.doi10.1016/j.jece.2026.121864
dc.identifier.issn2213-2929
dc.identifier.urihttp://hdl.handle.net/10198/36003
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationLaboratory of Separation and Reaction Engineering
dc.relationALICE - Associate Laboratory in Chemical Engineering
dc.relationAmphiphilic carbon-based materials for one-pot desulfurization and denitrogenation of liquid fuels
dc.relationOptimization of municipal solid waste management systems towards sustainability
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectProcess optimization
dc.subjectPlastic solid waste valorization
dc.subjectWaste-derived catalyst
dc.subjectFuel purification
dc.subjectHydrogen peroxide consumption
dc.titleOxidative denitrogenation using sustainable carbon nanotubes: Effect of reaction conditions on hydrogen peroxide efficiencyeng
dc.typejournal article
dcterms.references10.34620/dadosipb/BITCSE
dspace.entity.typePublication
oaire.awardNumberUID/00690/2025
oaire.awardNumberLA/P/0007/2020
oaire.awardNumberUID/EQU/50020/2019
oaire.awardNumberLA/P/0045/2020
oaire.awardNumberSFRH/BD/143224/2019
oaire.awardNumberSFRH/BD/151346/2021
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardTitleLaboratory of Separation and Reaction Engineering
oaire.awardTitleALICE - Associate Laboratory in Chemical Engineering
oaire.awardTitleAmphiphilic carbon-based materials for one-pot desulfurization and denitrogenation of liquid fuels
oaire.awardTitleOptimization of municipal solid waste management systems towards sustainability
oaire.awardURIhttp://hdl.handle.net/10198/35759
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FEQU%2F50020%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0045%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F143224%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F151346%2F2021/PT
oaire.citation.endPage15
oaire.citation.issue2
oaire.citation.startPage1
oaire.citation.titleJournal of Environmental Chemical Engineering
oaire.citation.volume14
oaire.fundingStreamCIMO
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_NORTE
oaire.fundingStreamOE
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameRoman
person.familyNameSilva
person.familyNameGomes
person.givenNameFernanda F.
person.givenNameAdriano S.
person.givenNameHelder T.
person.identifier.ciencia-idEE1B-DAA7-D0BD
person.identifier.ciencia-id3E14-5049-B09D
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-5360-5298
person.identifier.orcid0000-0002-6795-2335
person.identifier.orcid0000-0001-6898-2408
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
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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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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