Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants

Autores
Pecini, Eliana Melisa; Avena, Marcelo Javier
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This work reports the behavior of montmorillonite magnetite mixtures of varying composition in aqueous dispersions and evaluates their adsorbing properties using a cationic organicpollutant, methylene blue (MB+), and an anionic inorganic pollutant, arsenate (As(V)), as the adsorbing species. The effects of the presence of montmorillonite on the As(V) adsorption by magnetite andthe effects of magnetite on the MB+ adsorption by the clay were specially addressed. The simple mixture of a montmorillonite dispersion with a magnetite dispersion led to the spontaneous formation ofmontmorillonite?magnetite co-aggregates. These co-aggregates showed a unimodal electrophoreticmobility distribution, with no evidence of the presence of separate populations of montmorilloniteor magnetite. The application of a magnetic field confirmed the formation of co-aggregates andshowed that their separation rate increased as the magnetite content increased. Adsorption studiesas a function of the aggregate composition demonstrated that MB+ uptake was mainly controlledby the content of montmorillonite, while As(V) adsorption was mainly controlled by the content ofFe3O4. This permits an easy tuning of the adsorbing properties of cations and anions by controllingthe composition of the system.
Fil: Pecini, Eliana Melisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Avena, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Materia
REMEDIATION
MAGNETIC CLAYS
PARTICLE AGGREGATES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/167807
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutantsPecini, Eliana MelisaAvena, Marcelo JavierREMEDIATIONMAGNETIC CLAYSPARTICLE AGGREGATEShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1This work reports the behavior of montmorillonite magnetite mixtures of varying composition in aqueous dispersions and evaluates their adsorbing properties using a cationic organicpollutant, methylene blue (MB+), and an anionic inorganic pollutant, arsenate (As(V)), as the adsorbing species. The effects of the presence of montmorillonite on the As(V) adsorption by magnetite andthe effects of magnetite on the MB+ adsorption by the clay were specially addressed. The simple mixture of a montmorillonite dispersion with a magnetite dispersion led to the spontaneous formation ofmontmorillonite?magnetite co-aggregates. These co-aggregates showed a unimodal electrophoreticmobility distribution, with no evidence of the presence of separate populations of montmorilloniteor magnetite. The application of a magnetic field confirmed the formation of co-aggregates andshowed that their separation rate increased as the magnetite content increased. Adsorption studiesas a function of the aggregate composition demonstrated that MB+ uptake was mainly controlledby the content of montmorillonite, while As(V) adsorption was mainly controlled by the content ofFe3O4. This permits an easy tuning of the adsorbing properties of cations and anions by controllingthe composition of the system.Fil: Pecini, Eliana Melisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Avena, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaMultidisciplinary Digital Publishing Institute2021-08-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/167807Pecini, Eliana Melisa; Avena, Marcelo Javier; Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants; Multidisciplinary Digital Publishing Institute; Minerals; 11; 9; 27-8-2021; 1-132075-163XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3390/min11090927info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-163X/11/9/927info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:23:46Zoai:ri.conicet.gov.ar:11336/167807instacron: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 13:23:46.728CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
title Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
spellingShingle Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
Pecini, Eliana Melisa
REMEDIATION
MAGNETIC CLAYS
PARTICLE AGGREGATES
title_short Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
title_full Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
title_fullStr Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
title_full_unstemmed Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
title_sort Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants
dc.creator.none.fl_str_mv Pecini, Eliana Melisa
Avena, Marcelo Javier
author Pecini, Eliana Melisa
author_facet Pecini, Eliana Melisa
Avena, Marcelo Javier
author_role author
author2 Avena, Marcelo Javier
author2_role author
dc.subject.none.fl_str_mv REMEDIATION
MAGNETIC CLAYS
PARTICLE AGGREGATES
topic REMEDIATION
MAGNETIC CLAYS
PARTICLE AGGREGATES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This work reports the behavior of montmorillonite magnetite mixtures of varying composition in aqueous dispersions and evaluates their adsorbing properties using a cationic organicpollutant, methylene blue (MB+), and an anionic inorganic pollutant, arsenate (As(V)), as the adsorbing species. The effects of the presence of montmorillonite on the As(V) adsorption by magnetite andthe effects of magnetite on the MB+ adsorption by the clay were specially addressed. The simple mixture of a montmorillonite dispersion with a magnetite dispersion led to the spontaneous formation ofmontmorillonite?magnetite co-aggregates. These co-aggregates showed a unimodal electrophoreticmobility distribution, with no evidence of the presence of separate populations of montmorilloniteor magnetite. The application of a magnetic field confirmed the formation of co-aggregates andshowed that their separation rate increased as the magnetite content increased. Adsorption studiesas a function of the aggregate composition demonstrated that MB+ uptake was mainly controlledby the content of montmorillonite, while As(V) adsorption was mainly controlled by the content ofFe3O4. This permits an easy tuning of the adsorbing properties of cations and anions by controllingthe composition of the system.
Fil: Pecini, Eliana Melisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Avena, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
description This work reports the behavior of montmorillonite magnetite mixtures of varying composition in aqueous dispersions and evaluates their adsorbing properties using a cationic organicpollutant, methylene blue (MB+), and an anionic inorganic pollutant, arsenate (As(V)), as the adsorbing species. The effects of the presence of montmorillonite on the As(V) adsorption by magnetite andthe effects of magnetite on the MB+ adsorption by the clay were specially addressed. The simple mixture of a montmorillonite dispersion with a magnetite dispersion led to the spontaneous formation ofmontmorillonite?magnetite co-aggregates. These co-aggregates showed a unimodal electrophoreticmobility distribution, with no evidence of the presence of separate populations of montmorilloniteor magnetite. The application of a magnetic field confirmed the formation of co-aggregates andshowed that their separation rate increased as the magnetite content increased. Adsorption studiesas a function of the aggregate composition demonstrated that MB+ uptake was mainly controlledby the content of montmorillonite, while As(V) adsorption was mainly controlled by the content ofFe3O4. This permits an easy tuning of the adsorbing properties of cations and anions by controllingthe composition of the system.
publishDate 2021
dc.date.none.fl_str_mv 2021-08-27
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/11336/167807
Pecini, Eliana Melisa; Avena, Marcelo Javier; Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants; Multidisciplinary Digital Publishing Institute; Minerals; 11; 9; 27-8-2021; 1-13
2075-163X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/167807
identifier_str_mv Pecini, Eliana Melisa; Avena, Marcelo Javier; Clay–magnetite co-aggregates for efficient magnetic removal of organic and inorganic pollutants; Multidisciplinary Digital Publishing Institute; Minerals; 11; 9; 27-8-2021; 1-13
2075-163X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3390/min11090927
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-163X/11/9/927
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
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
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score 12.48226

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