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Plastic waste-derived carbon nanotubes: Influence of growth catalyst and catalytic activity in CWPO

2025Artigo científico Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Biotecnologia Ambiental
datacite.subject.sdg13:Ação Climática
dc.contributor.authorRoman, Fernanda F.
dc.contributor.authorSilva, Adriano S.
dc.contributor.authorTuesta, Jose L. Diaz de
dc.contributor.authorBaldo, Arthur P.
dc.contributor.authorLopes, Jessica P.M.
dc.contributor.authorGonçalves, Giane
dc.contributor.authorPereira, Ana I.
dc.contributor.authorPraça, Paulo
dc.contributor.authorSilva, Adrián
dc.contributor.authorFaria, Joaquim L.
dc.contributor.authorBañobre-López, Manuel
dc.contributor.authorGomes, Helder T.
dc.date.accessioned2025-04-07T11:29:44Z
dc.date.available2025-04-07T11:29:44Z
dc.date.issued2025
dc.description.abstractLow-density polyethylene (LDPE) was used in this work to grow carbon nanotubes (CNTs) by chemical vapor deposition (CVD) over catalysts based on Ni, Fe and Al, synthesized either by co-precipitation (C) or wet impregnation (I) methods, with CNT yields in the range of 16–33 %. The morphology of the CNTs was directly influenced by the route used for the CVD catalyst synthesis, with co-precipitation-derived CVD catalysts resulting in CNT samples with curly walls. CNTs were purified with H2SO4 (10–50 wt.%) to remove attached metal particles. All synthesized materials (CVD-catalysts, as-synthesized CNTs, and purified CNTs) were tested as catalysts in the catalytic wet peroxide oxidation (CWPO) of paracetamol (PCM), chosen as a model pharmaceutical compound. Removals of 100 % of PCM in 8 h and 71 % of total organic carbon (TOC) in 24 h were achieved, with an H2O2 consumption efficiency of 76 % in 24 h for purified CNT (CNT@NiFeAl-C-P). The same CVD-catalyst (NiFeAl-C) was used to grow CNTs using real LDPE waste, and it was tested under the same reaction conditions, resulting in a PCM and TOC abatement of 90 % and 65 %, respectively. The synthesis of CNTs using LDP waste was a good alternative, given the environmental benefits associated with its reintroduction into the economic cycle as a material with higher value than initially (upcycling).eng
dc.description.sponsorshipThis work was financially supported by project "PLASTIC_TO_- FUEL&MAT – Upcycling Waste Plastics into Fuel and Carbon Nano- materials" (PTDC/EQU-EQU/31439/2017), and by national funds through FCT/MCTES (PIDDAC): CeDRI, UIDB/05757/2020 (DOI: 10.54499/UIDB/05757/2020) and UIDP/05757/2020 (DOI: 10.54499/ UIDB/05757/2020); CIMO, UIDB/00690/2020 (DOI: 10.54499/UIDB/ 00690/2020) and UIDP/00690/2020 (DOI: 10.54499/UIDP/00690/ 2020); SusTEC, LA/P/0007/2020 (DOI: 10.54499/LA/P/0007/2020); LSRE-LCM, UIDB/50020/2020 (DOI: 10.54499/UIDB/50020/2020) and UIDP/50020/2020 (DOI: 10.54499/UIDP/50020/2020); ALiCE, LA/P/0045/2020 (DOI: 10.54499/LA/P/0045/2020); and PTDC/CTA- AMB/3489/2021 - RECY-SMARTE (DOI 10.54499/PTDC/CTA-AMB/ 3489/2021). 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 was supported by the doctoral Grant SFRH/BD/151346/2021 financed by FCT with funds from NORTE2020, under MIT Portugal Program. Jose L. Diaz De Tuesta acknowledges the financial support through the program of Atracci´on al Talento of Comunidad de Madrid (Spain) for the individual research grant 2022-T1/AMB-23946. The authors are also grateful for the finantial support provided by Sociedade Ponto Verde for the project “Estudo técnico-económico para a valorização de resíduos de embalagens plásticas na produção de nanotubos de carbono”.
dc.identifier.doi10.1016/j.jece.2024.115206
dc.identifier.issn2213-3437
dc.identifier.urihttp://hdl.handle.net/10198/34394
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationUpcycling Waste Plastics into Fuel and Carbon Nanomaterials
dc.relationResearch Centre in Digitalization and Intelligent Robotics
dc.relationResearch Centre in Digitalization and Intelligent Robotics
dc.relationMountain Research Center - UIDB/00690/2020
dc.relationMountain Research Center - UIDP/00690/2020
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions - LA/P/0007/2020
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
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 - SFRH/BD/151346/2021
dc.relationSFRH/BD/143224/2019
dc.relationSFRH/BD/151346/2021
dc.relation.ispartofJournal of Environmental Chemical Engineering
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectPlastic solid waste
dc.subjectAdvanced oxidation processes (AOPs)
dc.subjectHeterogeneous Fenton
dc.subjectAcetaminophen
dc.subjectContaminants of emerging concern
dc.subjectCarbocatalysts
dc.titlePlastic waste-derived carbon nanotubes: Influence of growth catalyst and catalytic activity in CWPOeng
dc.typejournal article
dspace.entity.typePublication
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oaire.awardTitleUpcycling Waste Plastics into Fuel and Carbon Nanomaterials
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oaire.citation.titleJournal of Environmental Chemical Engineering
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