Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water

Detalhes bibliográficos
Autor(a) principal: Campos, Valquíria
Data de Publicação: 2023
Outros Autores: Marques, Diego Gouveia, Nogueira, João, Amorim, Carlos O., Daniel-da-Silva, Ana Luísa, Trindade, Tito
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/39167
Resumo: Metoprolol is known as one of the most frequently used β-blockers to treat hypertension, however due to its widespread use and resistance to hydrolysis, concerning amounts of this medicine are found in surface waters, causing negative impacts on the environment and human health. To date, very few water treatment plants remove metoprolol due to the ineffectiveness of conventional procedures, thus indicating the need for more efficient water treatments for eliminating traces of this drug from aqueous wastes. A promising strategy is the development of magnetic assisted sorbents with a high surface area and adequate chemical modification aimed at the target pollutant, offering the possibility of total removal from water supplies and thus limiting potential environmental impacts. In this context, the purpose of this work was to investigate the application of magnetic Fe3O4 nanoparticles coated with silica and γ-polyglutamic acid to capture metoprolol dissolved in water. The synthesized sorbents consisted of magnetite nanoparticles with an average size of 55.8 nm, coated with a layer of amorphous silica covalently bound to γ-polyglutamic acid, thus exposing carboxylate surface active sites, which favor electrostatic interactions with metoprolol. As the γ-polyglutamic acid sources, two types of materials with distinct amounts in the biopolymer (30% and 92%) have been investigated. The adsorption of metoprolol by the nanosorbents γ-PGA/Fe3O4 was evaluated by means of adsorption isotherms and theoretical adsorption models. Freundlich and Langmuir models provide an accurate description of the isotherm, and the compound’s maximum adsorption capacity was 571.6 mg g-1. Noteworthy, the magnetic nanosorbents prepared using γ-polyglutamic acid 30% and 92% have shown comparable performances, which makes this process also economically attractive considering that a low-cost raw material can be used.
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spelling Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from waterγ-polyglutamic acidMagnetic nanoparticlesMetoprololWater treatmentMetoprolol is known as one of the most frequently used β-blockers to treat hypertension, however due to its widespread use and resistance to hydrolysis, concerning amounts of this medicine are found in surface waters, causing negative impacts on the environment and human health. To date, very few water treatment plants remove metoprolol due to the ineffectiveness of conventional procedures, thus indicating the need for more efficient water treatments for eliminating traces of this drug from aqueous wastes. A promising strategy is the development of magnetic assisted sorbents with a high surface area and adequate chemical modification aimed at the target pollutant, offering the possibility of total removal from water supplies and thus limiting potential environmental impacts. In this context, the purpose of this work was to investigate the application of magnetic Fe3O4 nanoparticles coated with silica and γ-polyglutamic acid to capture metoprolol dissolved in water. The synthesized sorbents consisted of magnetite nanoparticles with an average size of 55.8 nm, coated with a layer of amorphous silica covalently bound to γ-polyglutamic acid, thus exposing carboxylate surface active sites, which favor electrostatic interactions with metoprolol. As the γ-polyglutamic acid sources, two types of materials with distinct amounts in the biopolymer (30% and 92%) have been investigated. The adsorption of metoprolol by the nanosorbents γ-PGA/Fe3O4 was evaluated by means of adsorption isotherms and theoretical adsorption models. Freundlich and Langmuir models provide an accurate description of the isotherm, and the compound’s maximum adsorption capacity was 571.6 mg g-1. Noteworthy, the magnetic nanosorbents prepared using γ-polyglutamic acid 30% and 92% have shown comparable performances, which makes this process also economically attractive considering that a low-cost raw material can be used.Elsevier2023-08-03T11:32:56Z2023-10-01T00:00:00Z2023-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/39167eng10.1016/j.jece.2023.110498Campos, ValquíriaMarques, Diego GouveiaNogueira, JoãoAmorim, Carlos O.Daniel-da-Silva, Ana LuísaTrindade, Titoinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:16:14Zoai:ria.ua.pt:10773/39167Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:09:16.623304Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
title Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
spellingShingle Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
Campos, Valquíria
γ-polyglutamic acid
Magnetic nanoparticles
Metoprolol
Water treatment
title_short Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
title_full Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
title_fullStr Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
title_full_unstemmed Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
title_sort Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
author Campos, Valquíria
author_facet Campos, Valquíria
Marques, Diego Gouveia
Nogueira, João
Amorim, Carlos O.
Daniel-da-Silva, Ana Luísa
Trindade, Tito
author_role author
author2 Marques, Diego Gouveia
Nogueira, João
Amorim, Carlos O.
Daniel-da-Silva, Ana Luísa
Trindade, Tito
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Campos, Valquíria
Marques, Diego Gouveia
Nogueira, João
Amorim, Carlos O.
Daniel-da-Silva, Ana Luísa
Trindade, Tito
dc.subject.por.fl_str_mv γ-polyglutamic acid
Magnetic nanoparticles
Metoprolol
Water treatment
topic γ-polyglutamic acid
Magnetic nanoparticles
Metoprolol
Water treatment
description Metoprolol is known as one of the most frequently used β-blockers to treat hypertension, however due to its widespread use and resistance to hydrolysis, concerning amounts of this medicine are found in surface waters, causing negative impacts on the environment and human health. To date, very few water treatment plants remove metoprolol due to the ineffectiveness of conventional procedures, thus indicating the need for more efficient water treatments for eliminating traces of this drug from aqueous wastes. A promising strategy is the development of magnetic assisted sorbents with a high surface area and adequate chemical modification aimed at the target pollutant, offering the possibility of total removal from water supplies and thus limiting potential environmental impacts. In this context, the purpose of this work was to investigate the application of magnetic Fe3O4 nanoparticles coated with silica and γ-polyglutamic acid to capture metoprolol dissolved in water. The synthesized sorbents consisted of magnetite nanoparticles with an average size of 55.8 nm, coated with a layer of amorphous silica covalently bound to γ-polyglutamic acid, thus exposing carboxylate surface active sites, which favor electrostatic interactions with metoprolol. As the γ-polyglutamic acid sources, two types of materials with distinct amounts in the biopolymer (30% and 92%) have been investigated. The adsorption of metoprolol by the nanosorbents γ-PGA/Fe3O4 was evaluated by means of adsorption isotherms and theoretical adsorption models. Freundlich and Langmuir models provide an accurate description of the isotherm, and the compound’s maximum adsorption capacity was 571.6 mg g-1. Noteworthy, the magnetic nanosorbents prepared using γ-polyglutamic acid 30% and 92% have shown comparable performances, which makes this process also economically attractive considering that a low-cost raw material can be used.
publishDate 2023
dc.date.none.fl_str_mv 2023-08-03T11:32:56Z
2023-10-01T00:00:00Z
2023-10
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/39167
url http://hdl.handle.net/10773/39167
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1016/j.jece.2023.110498
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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