Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/10934529.2019.1640579 http://hdl.handle.net/11449/185971 |
Resumo: | In this article, a light-emitting diode (LED)-based photoreactor was designed and evaluated for degradation of the antibiotic sulfathiazole (STZ), using heterogeneous photo-Fenton process with an iron ore residue as catalyst. The effects of the type of magnetic stirrer bar, use of baffles, rotation speed, and type and intensity of irradiation source were evaluated. The results showed that the degradation of STZ was strongly influenced by rotation speed (1100 rpm) and that the use of an octagonal stirrer bar favoured high dispersion and greater contact of the catalyst with the reaction medium. Although the presence of baffles had little influence on STZ degradation, their use enabled good dispersion of the catalyst (due to axial flow) and eliminated the vortex formed at high stirring speeds. It was found that the iron mining residue could be activated by UV LEDs, visible light LEDs, and black light irradiation, with similar degradation efficiencies achieved. Using the LEDs, STZ concentrations below the detection limit were obtained after 40 min, with power consumption 38-fold (UV LEDs) and 22-fold (visible light LEDs) lower than required for black light irradiation. The results demonstrated the advantages of the use of LED devices as irradiation systems in heterogeneous photo-Fenton processes. |
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Repositório Institucional da UNESP |
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spelling |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalystPhotoreactorlight-emitting diodestirring systembafflessulfathiazoleIn this article, a light-emitting diode (LED)-based photoreactor was designed and evaluated for degradation of the antibiotic sulfathiazole (STZ), using heterogeneous photo-Fenton process with an iron ore residue as catalyst. The effects of the type of magnetic stirrer bar, use of baffles, rotation speed, and type and intensity of irradiation source were evaluated. The results showed that the degradation of STZ was strongly influenced by rotation speed (1100 rpm) and that the use of an octagonal stirrer bar favoured high dispersion and greater contact of the catalyst with the reaction medium. Although the presence of baffles had little influence on STZ degradation, their use enabled good dispersion of the catalyst (due to axial flow) and eliminated the vortex formed at high stirring speeds. It was found that the iron mining residue could be activated by UV LEDs, visible light LEDs, and black light irradiation, with similar degradation efficiencies achieved. Using the LEDs, STZ concentrations below the detection limit were obtained after 40 min, with power consumption 38-fold (UV LEDs) and 22-fold (visible light LEDs) lower than required for black light irradiation. The results demonstrated the advantages of the use of LED devices as irradiation systems in heterogeneous photo-Fenton processes.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Sao Paulo State Univ, Inst Chem, Dept Analyt Chem, UNESP, Araraquara, BrazilNatl Inst Alternat Technol Detect Toxicol Evaluat, Araraquara, BrazilSao Paulo State Univ, Inst Chem, Dept Analyt Chem, UNESP, Araraquara, BrazilFAPESP: 2015/21732-5FAPESP: 2017/03148-0Taylor & Francis IncUniversidade Estadual Paulista (Unesp)Natl Inst Alternat Technol Detect Toxicol EvaluatRojas-Mantilla, Hernan Dario [UNESP]Ayala-Duran, Saidy Cristina [UNESP]Pupo Nogueira, Raquel Fernandes [UNESP]2019-10-04T12:40:07Z2019-10-04T12:40:07Z2019-07-17info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10http://dx.doi.org/10.1080/10934529.2019.1640579Journal Of Environmental Science And Health Part A-toxic/hazardous Substances & Environmental Engineering. Philadelphia: Taylor & Francis Inc, 10 p., 2019.1093-4529http://hdl.handle.net/11449/18597110.1080/10934529.2019.1640579WOS:000478463800001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Environmental Science And Health Part A-toxic/hazardous Substances & Environmental Engineeringinfo:eu-repo/semantics/openAccess2021-10-22T21:10:02Zoai:repositorio.unesp.br:11449/185971Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:54:03.996820Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst |
title |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst |
spellingShingle |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst Rojas-Mantilla, Hernan Dario [UNESP] Photoreactor light-emitting diode stirring system baffles sulfathiazole |
title_short |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst |
title_full |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst |
title_fullStr |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst |
title_full_unstemmed |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst |
title_sort |
Parameters affecting LED photoreactor efficiency in a heterogeneous photo-Fenton process using iron mining residue as catalyst |
author |
Rojas-Mantilla, Hernan Dario [UNESP] |
author_facet |
Rojas-Mantilla, Hernan Dario [UNESP] Ayala-Duran, Saidy Cristina [UNESP] Pupo Nogueira, Raquel Fernandes [UNESP] |
author_role |
author |
author2 |
Ayala-Duran, Saidy Cristina [UNESP] Pupo Nogueira, Raquel Fernandes [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Natl Inst Alternat Technol Detect Toxicol Evaluat |
dc.contributor.author.fl_str_mv |
Rojas-Mantilla, Hernan Dario [UNESP] Ayala-Duran, Saidy Cristina [UNESP] Pupo Nogueira, Raquel Fernandes [UNESP] |
dc.subject.por.fl_str_mv |
Photoreactor light-emitting diode stirring system baffles sulfathiazole |
topic |
Photoreactor light-emitting diode stirring system baffles sulfathiazole |
description |
In this article, a light-emitting diode (LED)-based photoreactor was designed and evaluated for degradation of the antibiotic sulfathiazole (STZ), using heterogeneous photo-Fenton process with an iron ore residue as catalyst. The effects of the type of magnetic stirrer bar, use of baffles, rotation speed, and type and intensity of irradiation source were evaluated. The results showed that the degradation of STZ was strongly influenced by rotation speed (1100 rpm) and that the use of an octagonal stirrer bar favoured high dispersion and greater contact of the catalyst with the reaction medium. Although the presence of baffles had little influence on STZ degradation, their use enabled good dispersion of the catalyst (due to axial flow) and eliminated the vortex formed at high stirring speeds. It was found that the iron mining residue could be activated by UV LEDs, visible light LEDs, and black light irradiation, with similar degradation efficiencies achieved. Using the LEDs, STZ concentrations below the detection limit were obtained after 40 min, with power consumption 38-fold (UV LEDs) and 22-fold (visible light LEDs) lower than required for black light irradiation. The results demonstrated the advantages of the use of LED devices as irradiation systems in heterogeneous photo-Fenton processes. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-04T12:40:07Z 2019-10-04T12:40:07Z 2019-07-17 |
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/10.1080/10934529.2019.1640579 Journal Of Environmental Science And Health Part A-toxic/hazardous Substances & Environmental Engineering. Philadelphia: Taylor & Francis Inc, 10 p., 2019. 1093-4529 http://hdl.handle.net/11449/185971 10.1080/10934529.2019.1640579 WOS:000478463800001 |
url |
http://dx.doi.org/10.1080/10934529.2019.1640579 http://hdl.handle.net/11449/185971 |
identifier_str_mv |
Journal Of Environmental Science And Health Part A-toxic/hazardous Substances & Environmental Engineering. Philadelphia: Taylor & Francis Inc, 10 p., 2019. 1093-4529 10.1080/10934529.2019.1640579 WOS:000478463800001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Environmental Science And Health Part A-toxic/hazardous Substances & Environmental Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
10 |
dc.publisher.none.fl_str_mv |
Taylor & Francis Inc |
publisher.none.fl_str_mv |
Taylor & Francis Inc |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128873998581760 |