Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation

Autores
Pereira, Márcio C.; Coelho, Flávia S.; Nascentes, Clésia C.; Fabris, José D.; Araújo, Maria H.; Sapag, Manuel Karim; Oliveira, Luiz C. A.; Lago, Rochel M.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Composites based on iron supported on high surface area activated carbon were prepared and characterized with 57Fe Mössbauer spectroscopy, X-ray diffraction, saturation magnetization measurements and temperature-programmed reduction. Upon thermal treatment, the supported iron oxides react with carbon to yield reduced chemical species, i.e. Fe3O4 and Fe(0). This so produced composite was found to be highly efficient in two environmental applications: (i) degradation of textile dye and (ii) reduction of Cr(VI) in aqueous medium. Sequential reuses evidenced a progressive chemical deactivation of the composites due to a corresponding oxidation of the reactive species. Even after being virtually deactivated,the initial chemical reducing ability of the composites can be regenerated by heating at 800 °C under N2 atmosphere, and then reused for several consecutive times.
Fil: Pereira, Márcio C.. Universidade Federal Do Minas Gerais; Brasil
Fil: Coelho, Flávia S.. Universidade Federal Do Minas Gerais; Brasil
Fil: Nascentes, Clésia C.. Universidade Federal Do Minas Gerais; Brasil
Fil: Fabris, José D.. Universidade Federal Do Minas Gerais; Brasil
Fil: Araújo, Maria H.. Universidade Federal Do Minas Gerais; Brasil
Fil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Física Aplicada; Argentina. Universidad Nacional de San Luis; Argentina
Fil: Oliveira, Luiz C. A.. Universidade Federal de Lavras; Brasil
Fil: Lago, Rochel M.. Universidade Federal Do Minas Gerais; Brasil
Materia
Iron Oxides
Carbon
Heterogeneous Fenton
Cr(Vi) Reduction
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/14107
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/14107
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediationPereira, Márcio C.Coelho, Flávia S.Nascentes, Clésia C.Fabris, José D.Araújo, Maria H.Sapag, Manuel KarimOliveira, Luiz C. A.Lago, Rochel M.Iron OxidesCarbonHeterogeneous FentonCr(Vi) Reductionhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Composites based on iron supported on high surface area activated carbon were prepared and characterized with 57Fe Mössbauer spectroscopy, X-ray diffraction, saturation magnetization measurements and temperature-programmed reduction. Upon thermal treatment, the supported iron oxides react with carbon to yield reduced chemical species, i.e. Fe3O4 and Fe(0). This so produced composite was found to be highly efficient in two environmental applications: (i) degradation of textile dye and (ii) reduction of Cr(VI) in aqueous medium. Sequential reuses evidenced a progressive chemical deactivation of the composites due to a corresponding oxidation of the reactive species. Even after being virtually deactivated,the initial chemical reducing ability of the composites can be regenerated by heating at 800 °C under N2 atmosphere, and then reused for several consecutive times.Fil: Pereira, Márcio C.. Universidade Federal Do Minas Gerais; BrasilFil: Coelho, Flávia S.. Universidade Federal Do Minas Gerais; BrasilFil: Nascentes, Clésia C.. Universidade Federal Do Minas Gerais; BrasilFil: Fabris, José D.. Universidade Federal Do Minas Gerais; BrasilFil: Araújo, Maria H.. Universidade Federal Do Minas Gerais; BrasilFil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Física Aplicada; Argentina. Universidad Nacional de San Luis; ArgentinaFil: Oliveira, Luiz C. A.. Universidade Federal de Lavras; BrasilFil: Lago, Rochel M.. Universidade Federal Do Minas Gerais; BrasilElsevier2010-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/14107Pereira, Márcio C.; Coelho, Flávia S.; Nascentes, Clésia C.; Fabris, José D.; Araújo, Maria H.; et al.; Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation; Elsevier; Chemosphere; 81; 1; 10-2010; 7-120045-6535enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653510008507info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2010.07.056info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:15:15Zoai:ri.conicet.gov.ar:11336/14107instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:15:15.961CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation
title Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation
spellingShingle Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation
Pereira, Márcio C.
Iron Oxides
Carbon
Heterogeneous Fenton
Cr(Vi) Reduction
title_short Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation
title_full Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation
title_fullStr Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation
title_full_unstemmed Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation
title_sort Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation
dc.creator.none.fl_str_mv Pereira, Márcio C.
Coelho, Flávia S.
Nascentes, Clésia C.
Fabris, José D.
Araújo, Maria H.
Sapag, Manuel Karim
Oliveira, Luiz C. A.
Lago, Rochel M.
author Pereira, Márcio C.
author_facet Pereira, Márcio C.
Coelho, Flávia S.
Nascentes, Clésia C.
Fabris, José D.
Araújo, Maria H.
Sapag, Manuel Karim
Oliveira, Luiz C. A.
Lago, Rochel M.
author_role author
author2 Coelho, Flávia S.
Nascentes, Clésia C.
Fabris, José D.
Araújo, Maria H.
Sapag, Manuel Karim
Oliveira, Luiz C. A.
Lago, Rochel M.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Iron Oxides
Carbon
Heterogeneous Fenton
Cr(Vi) Reduction
topic Iron Oxides
Carbon
Heterogeneous Fenton
Cr(Vi) Reduction
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Composites based on iron supported on high surface area activated carbon were prepared and characterized with 57Fe Mössbauer spectroscopy, X-ray diffraction, saturation magnetization measurements and temperature-programmed reduction. Upon thermal treatment, the supported iron oxides react with carbon to yield reduced chemical species, i.e. Fe3O4 and Fe(0). This so produced composite was found to be highly efficient in two environmental applications: (i) degradation of textile dye and (ii) reduction of Cr(VI) in aqueous medium. Sequential reuses evidenced a progressive chemical deactivation of the composites due to a corresponding oxidation of the reactive species. Even after being virtually deactivated,the initial chemical reducing ability of the composites can be regenerated by heating at 800 °C under N2 atmosphere, and then reused for several consecutive times.
Fil: Pereira, Márcio C.. Universidade Federal Do Minas Gerais; Brasil
Fil: Coelho, Flávia S.. Universidade Federal Do Minas Gerais; Brasil
Fil: Nascentes, Clésia C.. Universidade Federal Do Minas Gerais; Brasil
Fil: Fabris, José D.. Universidade Federal Do Minas Gerais; Brasil
Fil: Araújo, Maria H.. Universidade Federal Do Minas Gerais; Brasil
Fil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Física Aplicada; Argentina. Universidad Nacional de San Luis; Argentina
Fil: Oliveira, Luiz C. A.. Universidade Federal de Lavras; Brasil
Fil: Lago, Rochel M.. Universidade Federal Do Minas Gerais; Brasil
description Composites based on iron supported on high surface area activated carbon were prepared and characterized with 57Fe Mössbauer spectroscopy, X-ray diffraction, saturation magnetization measurements and temperature-programmed reduction. Upon thermal treatment, the supported iron oxides react with carbon to yield reduced chemical species, i.e. Fe3O4 and Fe(0). This so produced composite was found to be highly efficient in two environmental applications: (i) degradation of textile dye and (ii) reduction of Cr(VI) in aqueous medium. Sequential reuses evidenced a progressive chemical deactivation of the composites due to a corresponding oxidation of the reactive species. Even after being virtually deactivated,the initial chemical reducing ability of the composites can be regenerated by heating at 800 °C under N2 atmosphere, and then reused for several consecutive times.
publishDate 2010
dc.date.none.fl_str_mv 2010-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/14107
Pereira, Márcio C.; Coelho, Flávia S.; Nascentes, Clésia C.; Fabris, José D.; Araújo, Maria H.; et al.; Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation; Elsevier; Chemosphere; 81; 1; 10-2010; 7-12
0045-6535
url http://hdl.handle.net/11336/14107
identifier_str_mv Pereira, Márcio C.; Coelho, Flávia S.; Nascentes, Clésia C.; Fabris, José D.; Araújo, Maria H.; et al.; Use of activated carbon as a reactive support to produce highly active-regenerable Fe-based reduction system for environmental remediation; Elsevier; Chemosphere; 81; 1; 10-2010; 7-12
0045-6535
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653510008507
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2010.07.056
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842980821127921664
score 12.993085

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