Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved

Autores
Santiago, Cintia C.; Fernández, Mariela Alejandra; Torres Sánchez, Rosa María
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The 4-chloro-2-methylphenoxy acid (MCPA) is an herbicide widely used in agriculture, which generates a great concern about contamination of surface water and serious consequences for human health and the environment. In this work, the adsorption of MCPA on an Argentine montmorillonite (MMT) and its organo-montmorillonite product (OMMT) with different dodecyl trimethyl ammonium loading was investigated. MCPA adsorption on OMMT increases at least 3 times, with respect to the amount determined for MMT. X-ray diffraction and zeta potential analyses indicated the inner (interlayer) and outer surface participate as adsorption sites. Changes in surface electric charge and also interlayer expansion suggest that dimethyl amine (MCPA counterion) was also surface-adsorbed. The larger aggregates of OMMT, without and with MCPA, obtained compared to those of MMT samples, generate an improvement in the coagulation efficiency. This property, particularly after MCPA retention, allows an easier separation of the solids from the solution and enables a simple technological process application.
Instituto de Recursos Minerales
Materia
Ciencias Naturales
Química
Adsorption
Characterization
Outer and inner surface sites
MCPA
Organomo-ntmorillonite
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/102878
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/102878
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involvedSantiago, Cintia C.Fernández, Mariela AlejandraTorres Sánchez, Rosa MaríaCiencias NaturalesQuímicaAdsorptionCharacterizationOuter and inner surface sitesMCPAOrganomo-ntmorilloniteThe 4-chloro-2-methylphenoxy acid (MCPA) is an herbicide widely used in agriculture, which generates a great concern about contamination of surface water and serious consequences for human health and the environment. In this work, the adsorption of MCPA on an Argentine montmorillonite (MMT) and its organo-montmorillonite product (OMMT) with different dodecyl trimethyl ammonium loading was investigated. MCPA adsorption on OMMT increases at least 3 times, with respect to the amount determined for MMT. X-ray diffraction and zeta potential analyses indicated the inner (interlayer) and outer surface participate as adsorption sites. Changes in surface electric charge and also interlayer expansion suggest that dimethyl amine (MCPA counterion) was also surface-adsorbed. The larger aggregates of OMMT, without and with MCPA, obtained compared to those of MMT samples, generate an improvement in the coagulation efficiency. This property, particularly after MCPA retention, allows an easier separation of the solids from the solution and enables a simple technological process application.Instituto de Recursos Minerales2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf245-253http://sedici.unlp.edu.ar/handle/10915/102878enginfo:eu-repo/semantics/altIdentifier/issn/1532-4109info:eu-repo/semantics/altIdentifier/doi/10.1080/03601234.2015.1120618info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:03:07Zoai:sedici.unlp.edu.ar:10915/102878Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:03:07.997SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved
title Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved
spellingShingle Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved
Santiago, Cintia C.
Ciencias Naturales
Química
Adsorption
Characterization
Outer and inner surface sites
MCPA
Organomo-ntmorillonite
title_short Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved
title_full Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved
title_fullStr Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved
title_full_unstemmed Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved
title_sort Adsorption and characterization of MCPA on DDTMA- and raw-montmorillonite: surface sites involved
dc.creator.none.fl_str_mv Santiago, Cintia C.
Fernández, Mariela Alejandra
Torres Sánchez, Rosa María
author Santiago, Cintia C.
author_facet Santiago, Cintia C.
Fernández, Mariela Alejandra
Torres Sánchez, Rosa María
author_role author
author2 Fernández, Mariela Alejandra
Torres Sánchez, Rosa María
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Química
Adsorption
Characterization
Outer and inner surface sites
MCPA
Organomo-ntmorillonite
topic Ciencias Naturales
Química
Adsorption
Characterization
Outer and inner surface sites
MCPA
Organomo-ntmorillonite
dc.description.none.fl_txt_mv The 4-chloro-2-methylphenoxy acid (MCPA) is an herbicide widely used in agriculture, which generates a great concern about contamination of surface water and serious consequences for human health and the environment. In this work, the adsorption of MCPA on an Argentine montmorillonite (MMT) and its organo-montmorillonite product (OMMT) with different dodecyl trimethyl ammonium loading was investigated. MCPA adsorption on OMMT increases at least 3 times, with respect to the amount determined for MMT. X-ray diffraction and zeta potential analyses indicated the inner (interlayer) and outer surface participate as adsorption sites. Changes in surface electric charge and also interlayer expansion suggest that dimethyl amine (MCPA counterion) was also surface-adsorbed. The larger aggregates of OMMT, without and with MCPA, obtained compared to those of MMT samples, generate an improvement in the coagulation efficiency. This property, particularly after MCPA retention, allows an easier separation of the solids from the solution and enables a simple technological process application.
Instituto de Recursos Minerales
description The 4-chloro-2-methylphenoxy acid (MCPA) is an herbicide widely used in agriculture, which generates a great concern about contamination of surface water and serious consequences for human health and the environment. In this work, the adsorption of MCPA on an Argentine montmorillonite (MMT) and its organo-montmorillonite product (OMMT) with different dodecyl trimethyl ammonium loading was investigated. MCPA adsorption on OMMT increases at least 3 times, with respect to the amount determined for MMT. X-ray diffraction and zeta potential analyses indicated the inner (interlayer) and outer surface participate as adsorption sites. Changes in surface electric charge and also interlayer expansion suggest that dimethyl amine (MCPA counterion) was also surface-adsorbed. The larger aggregates of OMMT, without and with MCPA, obtained compared to those of MMT samples, generate an improvement in the coagulation efficiency. This property, particularly after MCPA retention, allows an easier separation of the solids from the solution and enables a simple technological process application.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/102878
url http://sedici.unlp.edu.ar/handle/10915/102878
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1532-4109
info:eu-repo/semantics/altIdentifier/doi/10.1080/03601234.2015.1120618
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
245-253
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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