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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/56990
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dc.creatorRayane Cristian Ferreira Silvapt_BR
dc.creatorJose Domingos Ardissonpt_BR
dc.creatorAlexandre Alberto Chaves Cottapt_BR
dc.creatorMaria Helena Araujopt_BR
dc.creatorAna Paula de Carvalho Teixeirapt_BR
dc.date.accessioned2023-07-26T13:09:32Z-
dc.date.available2023-07-26T13:09:32Z-
dc.date.issued2020-
dc.citation.volume260pt_BR
dc.citation.spage114099pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.envpol.2020.114099pt_BR
dc.identifier.issn0269-7491pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/56990-
dc.description.resumoThis work reports the use of an iron ore tailings from waste dam as a catalyst and support for carbon nanotubes synthesis and their application in the adsorption of the 17α-ethinylestradiol hormone. The synthesis was carried out by Chemical Vapor Deposition (CVD) in a Fluidized Bed system using: ethylene at temperatures of 500, 600 and 700 °C, and acetonitrile at 500, 600, 700, 800 and 900 °C. The transmission electron microscopy (TEM) results showed that the two higher temperatures in each case favored the formation of nanostructures like carbon nanotubes (CNTs), with good yields. The ethylene source generated classic tubular structures of multiple walls. On the other hand, acetonitrile provided the formation of tubes with less organization, known as bamboo like. This morphology was caused by the insertion of nitrogen into the graphite structure (doping), which originates from the carbon source. The adsorptive capacity of the materials for 17α-Ethinylestradiol removal ranging from 9.2 mg g−1 to 22.3 mg g−1. The kinetic and adsorption isotherm studies were also performed for the systems. As for kinetics, all of them presented pseudo-second order behavior. In relation to the type of isotherm, the systems showed Freundlich behavior, that is, the adsorption occurs in multiple layers. Finally, it was concluded that the use of an iron ore tail as a catalyst in the production of CNTs by CVD is feasible. The materials synthesized still had good adsorptive capacity for an emerging contaminant, thus this study allowed the investigation of two environmental problems.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)pt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofEnvironmental Pollutionpt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectCarbon nanotubespt_BR
dc.subject17α-ethinylestradiolpt_BR
dc.subjectIron wastept_BR
dc.subjectChemical vapor deposition CVDpt_BR
dc.subjectAdsorptionpt_BR
dc.subject.otherNanotubos de carbonopt_BR
dc.subject.otherResíduos de metalpt_BR
dc.subject.otherAdsorçãopt_BR
dc.subject.otherDeposição quimica de vaporpt_BR
dc.subject.otherMicroscopia eletrônicapt_BR
dc.subject.otherNanoestruturapt_BR
dc.titleUse of iron mining tailings from dams for carbon nanotubes synthesis in fluidized bed for 17 α-ethinylestradiol removalpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0269749119367466pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-9447-5263pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5615-3482pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4464-1091pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2609-0281pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4985-7502pt_BR
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