Application of a stable Ag/TiO2 film in the simultaneous photodegradation of hormones
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
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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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 |
|
_version_ |
1808128459297259520 |