Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system

Autores
Azaro, Macarena Soledad; Flores, Federico Manuel; Casella, Mónica Laura; Peroni, María Belén; Rodríguez, C.; Torres Sánchez, Rosa María; Jaworski, María Angélica
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
It is known that the excess of oxyanions such as NO⁻₃ and BrO⁻₃ in drinking water affects its quality. In this work, three adsorbents (montmorillonite (Mt), silica (Si), and diatomaceous earth) loaded with hexadecyl- (H) and octadecyl-trimethylammonium (O) were used to remove these oxyanions from aqueous solutions by adsorption. In batch systems, the highest NO⁻₃ removal was obtained with Mt modified with H and O (Mt-H and Mt-O), attaining 33% and 50%, respectively, while for BrO⁻₃ removal Si modified with H and O, Si-H and Si-O samples, reached 38% and 42%, respectively. A direct relationship between the adsorption capacity of NO⁻₃ and BrO⁻₃ and the mass of the adsorbent was found in column filtration tests with Mt-O and Mt-H samples in standard solution and real groundwater samples. The adsorption capacity of the column, in the groundwater sample, remained constant after two reuses.The results obtained are promising for the development of a continuous oxyanion removal system containing the low-cost clay Mt modified with either H or O.
Centro de Tecnología de Recursos Minerales y Cerámica
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Facultad de Ingeniería
Materia
Química
Adsorption
Bromate
Column filtration
Nitrate
Organo-montmorillonite
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/125969
Acceder
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network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination systemAzaro, Macarena SoledadFlores, Federico ManuelCasella, Mónica LauraPeroni, María BelénRodríguez, C.Torres Sánchez, Rosa MaríaJaworski, María AngélicaQuímicaAdsorptionBromateColumn filtrationNitrateOrgano-montmorilloniteIt is known that the excess of oxyanions such as NO⁻₃ and BrO⁻₃ in drinking water affects its quality. In this work, three adsorbents (montmorillonite (Mt), silica (Si), and diatomaceous earth) loaded with hexadecyl- (H) and octadecyl-trimethylammonium (O) were used to remove these oxyanions from aqueous solutions by adsorption. In batch systems, the highest NO⁻₃ removal was obtained with Mt modified with H and O (Mt-H and Mt-O), attaining 33% and 50%, respectively, while for BrO⁻₃ removal Si modified with H and O, Si-H and Si-O samples, reached 38% and 42%, respectively. A direct relationship between the adsorption capacity of NO⁻₃ and BrO⁻₃ and the mass of the adsorbent was found in column filtration tests with Mt-O and Mt-H samples in standard solution and real groundwater samples. The adsorption capacity of the column, in the groundwater sample, remained constant after two reuses.The results obtained are promising for the development of a continuous oxyanion removal system containing the low-cost clay Mt modified with either H or O.Centro de Tecnología de Recursos Minerales y CerámicaCentro de Investigación y Desarrollo en Ciencias AplicadasFacultad de Ingeniería2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1243-1252http://sedici.unlp.edu.ar/handle/10915/125969enginfo:eu-repo/semantics/altIdentifier/issn/1606-9749info:eu-repo/semantics/altIdentifier/issn/1607-0798info:eu-repo/semantics/altIdentifier/doi/10.2166/ws.2020.324info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:30:18Zoai:sedici.unlp.edu.ar:10915/125969Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:18.372SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
title Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
spellingShingle Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
Azaro, Macarena Soledad
Química
Adsorption
Bromate
Column filtration
Nitrate
Organo-montmorillonite
title_short Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
title_full Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
title_fullStr Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
title_full_unstemmed Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
title_sort Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
dc.creator.none.fl_str_mv Azaro, Macarena Soledad
Flores, Federico Manuel
Casella, Mónica Laura
Peroni, María Belén
Rodríguez, C.
Torres Sánchez, Rosa María
Jaworski, María Angélica
author Azaro, Macarena Soledad
author_facet Azaro, Macarena Soledad
Flores, Federico Manuel
Casella, Mónica Laura
Peroni, María Belén
Rodríguez, C.
Torres Sánchez, Rosa María
Jaworski, María Angélica
author_role author
author2 Flores, Federico Manuel
Casella, Mónica Laura
Peroni, María Belén
Rodríguez, C.
Torres Sánchez, Rosa María
Jaworski, María Angélica
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Química
Adsorption
Bromate
Column filtration
Nitrate
Organo-montmorillonite
topic Química
Adsorption
Bromate
Column filtration
Nitrate
Organo-montmorillonite
dc.description.none.fl_txt_mv It is known that the excess of oxyanions such as NO⁻₃ and BrO⁻₃ in drinking water affects its quality. In this work, three adsorbents (montmorillonite (Mt), silica (Si), and diatomaceous earth) loaded with hexadecyl- (H) and octadecyl-trimethylammonium (O) were used to remove these oxyanions from aqueous solutions by adsorption. In batch systems, the highest NO⁻₃ removal was obtained with Mt modified with H and O (Mt-H and Mt-O), attaining 33% and 50%, respectively, while for BrO⁻₃ removal Si modified with H and O, Si-H and Si-O samples, reached 38% and 42%, respectively. A direct relationship between the adsorption capacity of NO⁻₃ and BrO⁻₃ and the mass of the adsorbent was found in column filtration tests with Mt-O and Mt-H samples in standard solution and real groundwater samples. The adsorption capacity of the column, in the groundwater sample, remained constant after two reuses.The results obtained are promising for the development of a continuous oxyanion removal system containing the low-cost clay Mt modified with either H or O.
Centro de Tecnología de Recursos Minerales y Cerámica
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Facultad de Ingeniería
description It is known that the excess of oxyanions such as NO⁻₃ and BrO⁻₃ in drinking water affects its quality. In this work, three adsorbents (montmorillonite (Mt), silica (Si), and diatomaceous earth) loaded with hexadecyl- (H) and octadecyl-trimethylammonium (O) were used to remove these oxyanions from aqueous solutions by adsorption. In batch systems, the highest NO⁻₃ removal was obtained with Mt modified with H and O (Mt-H and Mt-O), attaining 33% and 50%, respectively, while for BrO⁻₃ removal Si modified with H and O, Si-H and Si-O samples, reached 38% and 42%, respectively. A direct relationship between the adsorption capacity of NO⁻₃ and BrO⁻₃ and the mass of the adsorbent was found in column filtration tests with Mt-O and Mt-H samples in standard solution and real groundwater samples. The adsorption capacity of the column, in the groundwater sample, remained constant after two reuses.The results obtained are promising for the development of a continuous oxyanion removal system containing the low-cost clay Mt modified with either H or O.
publishDate 2021
dc.date.none.fl_str_mv 2021
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/10915/125969
url http://sedici.unlp.edu.ar/handle/10915/125969
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1606-9749
info:eu-repo/semantics/altIdentifier/issn/1607-0798
info:eu-repo/semantics/altIdentifier/doi/10.2166/ws.2020.324
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
1243-1252
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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