Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones

Detalhes bibliográficos
Autor(a) principal: Lima, Karla VL
Data de Publicação: 2020
Outros Autores: Emídio, Elissandro S [UNESP], Pupo Nogueira, Raquel F [UNESP], Vasconcelos, Nazaré do Socorro LS, Araújo, Adriana B
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1002/jctb.6258
http://hdl.handle.net/11449/199733
Resumo: BACKGROUND: The natural hormones estrone (E1) and 17β-estradiol (E2) and the synthetic hormone 17α-ethynylestradiol (EE2) are excreted daily by humans and may reach water and wastewater treatment plants, which do not efficiently remove these estrogens. The aim of the present study was to evaluate the efficiency and reusability of Ag/TiO2 films as catalysts for simultaneous degradation of the hormones E1, E2 and EE2 in aqueous medium by heterogeneous photocatalysis and the contribution of reactive oxygenated species. The influence of aeration on the system and the effects of estrogen concentration and Ag/TiO2 film area were also evaluated in the photodegradation process. RESULTS: The photocatalytic degradation assays showed efficiency higher than 97% for E2 and EE2 (10 μg L−1) after approximately 3.5 h and above 95% for E1 (100 μg L−1) after 4.5 h. It was observed that hydroxyl radical is the main reactive oxidant species in the photodegradation process, responsible for 87, 86 and 79% degradation of E1, E2 and EE2 respectively. CONCLUSION: The treatment process applied using the Ag/TiO2 films proved to be very stable and efficient for the simultaneous degradation of the studied hormones up to 305 h of reaction period, obtaining a percentage of degradation above 90%. © 2019 Society of Chemical Industry.
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spelling Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormonesAg/TiO2 filmsendocrine disruptorsestradiolestroneheterogeneous photocatalysisBACKGROUND: The natural hormones estrone (E1) and 17β-estradiol (E2) and the synthetic hormone 17α-ethynylestradiol (EE2) are excreted daily by humans and may reach water and wastewater treatment plants, which do not efficiently remove these estrogens. The aim of the present study was to evaluate the efficiency and reusability of Ag/TiO2 films as catalysts for simultaneous degradation of the hormones E1, E2 and EE2 in aqueous medium by heterogeneous photocatalysis and the contribution of reactive oxygenated species. The influence of aeration on the system and the effects of estrogen concentration and Ag/TiO2 film area were also evaluated in the photodegradation process. RESULTS: The photocatalytic degradation assays showed efficiency higher than 97% for E2 and EE2 (10 μg L−1) after approximately 3.5 h and above 95% for E1 (100 μg L−1) after 4.5 h. It was observed that hydroxyl radical is the main reactive oxidant species in the photodegradation process, responsible for 87, 86 and 79% degradation of E1, E2 and EE2 respectively. CONCLUSION: The treatment process applied using the Ag/TiO2 films proved to be very stable and efficient for the simultaneous degradation of the studied hormones up to 305 h of reaction period, obtaining a percentage of degradation above 90%. © 2019 Society of Chemical Industry.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do MaranhãoDepartment of Chemistry Federal Institute of Education Science and Technology of Maranhão (IFMA)Department of Analytical Chemistry Institute of Chemistry of Araraquara São Paulo State University (UNESP)Department of Analytical Chemistry Institute of Chemistry of Araraquara São Paulo State University (UNESP)FAPESP: 2016/11373-0Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão: BM-02154/17Federal Institute of Education Science and Technology of Maranhão (IFMA)Universidade Estadual Paulista (Unesp)Lima, Karla VLEmídio, Elissandro S [UNESP]Pupo Nogueira, Raquel F [UNESP]Vasconcelos, Nazaré do Socorro LSAraújo, Adriana B2020-12-12T01:47:48Z2020-12-12T01:47:48Z2020-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2656-2663http://dx.doi.org/10.1002/jctb.6258Journal of Chemical Technology and Biotechnology, v. 95, n. 10, p. 2656-2663, 2020.1097-46600268-2575http://hdl.handle.net/11449/19973310.1002/jctb.62582-s2.0-85075739440Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Chemical Technology and Biotechnologyinfo:eu-repo/semantics/openAccess2021-10-23T09:20:13Zoai:repositorio.unesp.br:11449/199733Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:05:45.101054Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
title Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
spellingShingle Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
Lima, Karla VL
Ag/TiO2 films
endocrine disruptors
estradiol
estrone
heterogeneous photocatalysis
title_short Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
title_full Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
title_fullStr Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
title_full_unstemmed Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
title_sort Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
author Lima, Karla VL
author_facet Lima, Karla VL
Emídio, Elissandro S [UNESP]
Pupo Nogueira, Raquel F [UNESP]
Vasconcelos, Nazaré do Socorro LS
Araújo, Adriana B
author_role author
author2 Emídio, Elissandro S [UNESP]
Pupo Nogueira, Raquel F [UNESP]
Vasconcelos, Nazaré do Socorro LS
Araújo, Adriana B
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Federal Institute of Education Science and Technology of Maranhão (IFMA)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Lima, Karla VL
Emídio, Elissandro S [UNESP]
Pupo Nogueira, Raquel F [UNESP]
Vasconcelos, Nazaré do Socorro LS
Araújo, Adriana B
dc.subject.por.fl_str_mv Ag/TiO2 films
endocrine disruptors
estradiol
estrone
heterogeneous photocatalysis
topic Ag/TiO2 films
endocrine disruptors
estradiol
estrone
heterogeneous photocatalysis
description BACKGROUND: The natural hormones estrone (E1) and 17β-estradiol (E2) and the synthetic hormone 17α-ethynylestradiol (EE2) are excreted daily by humans and may reach water and wastewater treatment plants, which do not efficiently remove these estrogens. The aim of the present study was to evaluate the efficiency and reusability of Ag/TiO2 films as catalysts for simultaneous degradation of the hormones E1, E2 and EE2 in aqueous medium by heterogeneous photocatalysis and the contribution of reactive oxygenated species. The influence of aeration on the system and the effects of estrogen concentration and Ag/TiO2 film area were also evaluated in the photodegradation process. RESULTS: The photocatalytic degradation assays showed efficiency higher than 97% for E2 and EE2 (10 μg L−1) after approximately 3.5 h and above 95% for E1 (100 μg L−1) after 4.5 h. It was observed that hydroxyl radical is the main reactive oxidant species in the photodegradation process, responsible for 87, 86 and 79% degradation of E1, E2 and EE2 respectively. CONCLUSION: The treatment process applied using the Ag/TiO2 films proved to be very stable and efficient for the simultaneous degradation of the studied hormones up to 305 h of reaction period, obtaining a percentage of degradation above 90%. © 2019 Society of Chemical Industry.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-12T01:47:48Z
2020-12-12T01:47:48Z
2020-10-01
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://dx.doi.org/10.1002/jctb.6258
Journal of Chemical Technology and Biotechnology, v. 95, n. 10, p. 2656-2663, 2020.
1097-4660
0268-2575
http://hdl.handle.net/11449/199733
10.1002/jctb.6258
2-s2.0-85075739440
url http://dx.doi.org/10.1002/jctb.6258
http://hdl.handle.net/11449/199733
identifier_str_mv Journal of Chemical Technology and Biotechnology, v. 95, n. 10, p. 2656-2663, 2020.
1097-4660
0268-2575
10.1002/jctb.6258
2-s2.0-85075739440
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Chemical Technology and Biotechnology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 2656-2663
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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