Use of iron mining tailings from dams for carbon nanotubes synthesis in fluidized bed for 17 α-ethinylestradiol removal

Página do item simplificado
dc.creatorRayane Cristian Ferreira Silva
dc.creatorJose Domingos Ardisson
dc.creatorAlexandre Alberto Chaves Cotta
dc.creatorMaria Helena Araujo
dc.creatorAna Paula de Carvalho Teixeira
dc.date.accessioned2023-07-26T13:09:32Z
dc.date.accessioned2025-09-08T23:00:24Z
dc.date.available2023-07-26T13:09:32Z
dc.date.issued2020
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.envpol.2020.114099
dc.identifier.issn0269-7491
dc.identifier.urihttps://hdl.handle.net/1843/56990
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofEnvironmental Pollution
dc.rightsAcesso Restrito
dc.subjectNanotubos de carbono
dc.subjectResíduos de metal
dc.subjectAdsorção
dc.subjectDeposição quimica de vapor
dc.subjectMicroscopia eletrônica
dc.subjectNanoestrutura
dc.subject.otherCarbon nanotubes
dc.subject.other17α-ethinylestradiol
dc.subject.otherIron waste
dc.subject.otherChemical vapor deposition CVD
dc.subject.otherAdsorption
dc.titleUse of iron mining tailings from dams for carbon nanotubes synthesis in fluidized bed for 17 α-ethinylestradiol removal
dc.typeArtigo de periódico
local.citation.spage114099
local.citation.volume260
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-9447-5263
local.identifier.orcidhttps://orcid.org/0000-0002-5615-3482
local.identifier.orcidhttps://orcid.org/0000-0002-4464-1091
local.identifier.orcidhttps://orcid.org/0000-0002-2609-0281
local.identifier.orcidhttps://orcid.org/0000-0002-4985-7502
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0269749119367466

Arquivos

Licença do pacote

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
License.txt
Tamanho:
1.99 KB
Formato:
Plain Text
Descrição:
Baixar

Coleções

Artigo de Periódico

Logo UFMG