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 and 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 sol...

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Autores principales:	M. Azaro, F. M. Flores, M. Casella, B. Peroni, C. Rodríguez, R. M. Torres Sánchez, M. Jaworski
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption bromate column filtration nitrate organo-montmorillonite Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/cf007913cb7b433485bb3f2cf445c4aa
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spelling	oai:doaj.org-article:cf007913cb7b433485bb3f2cf445c4aa2021-11-06T07:12:46ZSynthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system1606-97491607-079810.2166/ws.2020.324https://doaj.org/article/cf007913cb7b433485bb3f2cf445c4aa2021-05-01T00:00:00Zhttp://ws.iwaponline.com/content/21/3/1243https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798It is known that the excess of oxyanions such as and 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 removal was obtained with Mt modified with H and O (Mt-H and Mt-O), attaining 33% and 50%, respectively, while for 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 and 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. HIGHLIGHTS Three adsorbents were evaluated for oxyanion removal.; Montmorillonite modified with surfactants was efficient in nitrate removal.; Silica modified with surfactants was efficient in bromate removal.; Adsorption column experiments were performed for oxyanion removal.; The column was successfully reused twice.;M. AzaroF. M. FloresM. CasellaB. PeroniC. RodríguezR. M. Torres SánchezM. JaworskiIWA Publishingarticleadsorptionbromatecolumn filtrationnitrateorgano-montmorilloniteWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 3, Pp 1243-1252 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption bromate column filtration nitrate organo-montmorillonite Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	adsorption bromate column filtration nitrate organo-montmorillonite Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 M. Azaro F. M. Flores M. Casella B. Peroni C. Rodríguez R. M. Torres Sánchez M. Jaworski Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system
description	It is known that the excess of oxyanions such as and 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 removal was obtained with Mt modified with H and O (Mt-H and Mt-O), attaining 33% and 50%, respectively, while for 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 and 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. HIGHLIGHTS Three adsorbents were evaluated for oxyanion removal.; Montmorillonite modified with surfactants was efficient in nitrate removal.; Silica modified with surfactants was efficient in bromate removal.; Adsorption column experiments were performed for oxyanion removal.; The column was successfully reused twice.;
format	article
author	M. Azaro F. M. Flores M. Casella B. Peroni C. Rodríguez R. M. Torres Sánchez M. Jaworski
author_facet	M. Azaro F. M. Flores M. Casella B. Peroni C. Rodríguez R. M. Torres Sánchez M. Jaworski
author_sort	M. Azaro
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
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/cf007913cb7b433485bb3f2cf445c4aa
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Synthesis and characterization of adsorbents for the elimination of nitrates and bromates from water aiming to develop a continuous oxyanion water elimination system

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