Hematite reaction with tar to produce carbon/iron composites for the reduction of Cr(VI) contaminant

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorMagalhães, Fabiano-
Autor(es): dc.creatorPereira, Márcio César-
Autor(es): dc.creatorFabris, José Domingos-
Autor(es): dc.creatorBottrel, Sue Ellen Costa-
Autor(es): dc.creatorAmaya, Alejandro-
Autor(es): dc.creatorMogliazza, Nestor-
Autor(es): dc.creatorLago, Rochel Montero-
Data de aceite: dc.date.accessioned2026-02-09T12:00:41Z-
Data de disponibilização: dc.date.available2026-02-09T12:00:41Z-
Data de envio: dc.date.issued2018-03-05-
Data de envio: dc.date.issued2018-03-05-
Data de envio: dc.date.issued2010-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/28766-
Fonte completa do material: dc.identifierhttps://link.springer.com/chapter/10.1007/978-3-642-10764-1_8-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1152388-
Descrição: dc.descriptionIn this work, highly reactive carbon–iron composites were prepared using a waste, i.e. tar, as carbon precursor and a simple iron oxide, i.e. hematite. Tar was impregnated on Fe2O3 with different tar/hematite weight ratios of 1:1; 2:1 and 4:1, and thermally treated under N2 atmosphere (400°C, 600°C and 800°C). Mössbauer, XRD and magnetization measurements suggested that treatment at 400°C and 600°C produces Fe3O4 but treatment at 800°C produced mainly Fe°. Raman and TG analyses of the different composites suggested the formation of carbon contents of 18, 24 and 32 wt.% as amorphous and graphitic highly dispersed on the Fe surface. The composites obtained at 800°C showed high efficiency to reduce Cr(VI) as CrO 2−4 in aqueous medium with much better results compared to finely ground commercial Fe°.-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceLACAME 2008-
Palavras-chave: dc.subjectIron oxides-
Palavras-chave: dc.subjectMössbauer spectroscopy-
Palavras-chave: dc.subjectHexavalent chromium - Contamination-
Palavras-chave: dc.subjectHighly reactive carbon-
Palavras-chave: dc.subjectHighly reactive iron-
Palavras-chave: dc.subjectÓxidos de ferro-
Palavras-chave: dc.subjectEspectroscopia Mössbauer-
Palavras-chave: dc.subjectCromo hexavalente - Contaminação-
Palavras-chave: dc.subjectCarbono altamente reativo-
Palavras-chave: dc.subjectFerro altamente reativo-
Título: dc.titleHematite reaction with tar to produce carbon/iron composites for the reduction of Cr(VI) contaminant-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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