Magnetic nanosorbents of γ-polyglutamic acid for removing a β-blocker from water
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Outros Autores: | , , , , |
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. |
id |
RCAP_b98bed1114b34b8a41465ea83e96ebf5 |
---|---|
oai_identifier_str |
oai:ria.ua.pt:10773/39167 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
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 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799137743615295488 |