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

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 a...

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Autores principales: Azaro, Macarena Soledad, Flores, Federico Manuel, Casella, Mónica Laura, Peroni, María Belén, Rodríguez, C., Torres Sánchez, Rosa María, Jaworski, María Angélica
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Química
Adsorption
Bromate
Column filtration
Nitrate
Organo-montmorillonite
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125969
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125969
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Adsorption
Bromate
Column filtration
Nitrate
Organo-montmorillonite
spellingShingle Química
Adsorption
Bromate
Column filtration
Nitrate
Organo-montmorillonite
Azaro, Macarena Soledad
Flores, Federico Manuel
Casella, Mónica Laura
Peroni, María Belén
Rodríguez, C.
Torres Sánchez, Rosa María
Jaworski, María Angélica
Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
topic_facet Química
Adsorption
Bromate
Column filtration
Nitrate
Organo-montmorillonite
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.
format Articulo
Articulo
author Azaro, Macarena Soledad
Flores, Federico Manuel
Casella, Mónica Laura
Peroni, María Belén
Rodríguez, C.
Torres Sánchez, Rosa María
Jaworski, María Angélica
author_facet Azaro, Macarena Soledad
Flores, Federico Manuel
Casella, Mónica Laura
Peroni, María Belén
Rodríguez, C.
Torres Sánchez, Rosa María
Jaworski, María Angélica
author_sort Azaro, Macarena Soledad
title Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
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
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/125969
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