Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration

Detalhes bibliográficos
Autor(a) principal: Chiavone Filho, Osvaldo
Data de Publicação: 2012
Outros Autores: Luna, Airton José de, Machulek Júnior, Amilcar, Nascimento, Cláudio Augusto Oller do, Moraes, José Ermírio Ferreira de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/44956
Resumo: A highly concentrated aqueous saline-containing solution of phenol, 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4-dichlorophenol (2,4-DCP) was treated by the photo-Fenton process in a system composed of an annular reactor with a quartz immersion well and a medium-pressure mercury lamp (450 W). The study was conducted under special conditions to minimize the costs of acidification and neutralization, which are usual steps in this type of process. Photochemical reactions were carried out to investigate the influence of some process variables such as the initial concentration of Fe2+ ([Fe2+]0) from 1.0 up to 2.5 mM, the rate in mmol of H2O2 fed into the system () from 3.67 up to 7.33 mmol of H2O2/min during 120 min of reaction time, and the initial pH (pH0) from 3.0 up to 9.0 in the presence and absence of NaCl (60.0 g/L). Although the optimum pH for the photo-Fenton process is about 3.0, this particular system performed well in experimental conditions starting at alkaline and neutral pH. The results obtained here are promising for industrial applications, particularly in view of the high concentration of chloride, a known hydroxyl radical scavenger and the main oxidant present in photo-Fenton processes
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spelling Chiavone Filho, OsvaldoLuna, Airton José deMachulek Júnior, AmilcarNascimento, Cláudio Augusto Oller doMoraes, José Ermírio Ferreira de2021-11-22T13:41:04Z2021-11-22T13:41:04Z2012-11-30LUNA, Airton José de; CHIAVONE-FILHO, Osvaldo ; MACHULEK JR., Amilcar; MORAES, José Ermírio Ferreira de; NASCIMENTO, Claudio Augusto Oller do. Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration. Journal of Environmental Management, v. 111, p. 10-17, 2012. Disponível em: https://www.sciencedirect.com/science/article/pii/S0301479712003295?via%3Dihub. Acesso em: 22 jun. 2021. https://doi.org/10.1016/j.jenvman.2012.06.014.0301-4797https://repositorio.ufrn.br/handle/123456789/4495610.1016/j.jenvman.2012.06.014ElsevierAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessPhoto-FentonSodium chloridePesticidesPhoto-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentrationinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleA highly concentrated aqueous saline-containing solution of phenol, 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4-dichlorophenol (2,4-DCP) was treated by the photo-Fenton process in a system composed of an annular reactor with a quartz immersion well and a medium-pressure mercury lamp (450 W). The study was conducted under special conditions to minimize the costs of acidification and neutralization, which are usual steps in this type of process. Photochemical reactions were carried out to investigate the influence of some process variables such as the initial concentration of Fe2+ ([Fe2+]0) from 1.0 up to 2.5 mM, the rate in mmol of H2O2 fed into the system () from 3.67 up to 7.33 mmol of H2O2/min during 120 min of reaction time, and the initial pH (pH0) from 3.0 up to 9.0 in the presence and absence of NaCl (60.0 g/L). Although the optimum pH for the photo-Fenton process is about 3.0, this particular system performed well in experimental conditions starting at alkaline and neutral pH. The results obtained here are promising for industrial applications, particularly in view of the high concentration of chloride, a known hydroxyl radical scavenger and the main oxidant present in photo-Fenton processesengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALPhotoFentonOxidation_ChiavoneFIlho_2012.pdfPhotoFentonOxidation_ChiavoneFIlho_2012.pdfapplication/pdf1116939https://repositorio.ufrn.br/bitstream/123456789/44956/1/PhotoFentonOxidation_ChiavoneFIlho_2012.pdf1772b7ff7bf2c54445efc3d90415786eMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/44956/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/44956/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53123456789/449562021-11-22 10:41:04.918oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-11-22T13:41:04Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.pt_BR.fl_str_mv Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration
title Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration
spellingShingle Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration
Chiavone Filho, Osvaldo
Photo-Fenton
Sodium chloride
Pesticides
title_short Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration
title_full Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration
title_fullStr Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration
title_full_unstemmed Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration
title_sort Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration
author Chiavone Filho, Osvaldo
author_facet Chiavone Filho, Osvaldo
Luna, Airton José de
Machulek Júnior, Amilcar
Nascimento, Cláudio Augusto Oller do
Moraes, José Ermírio Ferreira de
author_role author
author2 Luna, Airton José de
Machulek Júnior, Amilcar
Nascimento, Cláudio Augusto Oller do
Moraes, José Ermírio Ferreira de
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Chiavone Filho, Osvaldo
Luna, Airton José de
Machulek Júnior, Amilcar
Nascimento, Cláudio Augusto Oller do
Moraes, José Ermírio Ferreira de
dc.subject.por.fl_str_mv Photo-Fenton
Sodium chloride
Pesticides
topic Photo-Fenton
Sodium chloride
Pesticides
description A highly concentrated aqueous saline-containing solution of phenol, 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4-dichlorophenol (2,4-DCP) was treated by the photo-Fenton process in a system composed of an annular reactor with a quartz immersion well and a medium-pressure mercury lamp (450 W). The study was conducted under special conditions to minimize the costs of acidification and neutralization, which are usual steps in this type of process. Photochemical reactions were carried out to investigate the influence of some process variables such as the initial concentration of Fe2+ ([Fe2+]0) from 1.0 up to 2.5 mM, the rate in mmol of H2O2 fed into the system () from 3.67 up to 7.33 mmol of H2O2/min during 120 min of reaction time, and the initial pH (pH0) from 3.0 up to 9.0 in the presence and absence of NaCl (60.0 g/L). Although the optimum pH for the photo-Fenton process is about 3.0, this particular system performed well in experimental conditions starting at alkaline and neutral pH. The results obtained here are promising for industrial applications, particularly in view of the high concentration of chloride, a known hydroxyl radical scavenger and the main oxidant present in photo-Fenton processes
publishDate 2012
dc.date.issued.fl_str_mv 2012-11-30
dc.date.accessioned.fl_str_mv 2021-11-22T13:41:04Z
dc.date.available.fl_str_mv 2021-11-22T13:41:04Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.citation.fl_str_mv LUNA, Airton José de; CHIAVONE-FILHO, Osvaldo ; MACHULEK JR., Amilcar; MORAES, José Ermírio Ferreira de; NASCIMENTO, Claudio Augusto Oller do. Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration. Journal of Environmental Management, v. 111, p. 10-17, 2012. Disponível em: https://www.sciencedirect.com/science/article/pii/S0301479712003295?via%3Dihub. Acesso em: 22 jun. 2021. https://doi.org/10.1016/j.jenvman.2012.06.014.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/44956
dc.identifier.issn.none.fl_str_mv 0301-4797
dc.identifier.doi.none.fl_str_mv 10.1016/j.jenvman.2012.06.014
identifier_str_mv LUNA, Airton José de; CHIAVONE-FILHO, Osvaldo ; MACHULEK JR., Amilcar; MORAES, José Ermírio Ferreira de; NASCIMENTO, Claudio Augusto Oller do. Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration. Journal of Environmental Management, v. 111, p. 10-17, 2012. Disponível em: https://www.sciencedirect.com/science/article/pii/S0301479712003295?via%3Dihub. Acesso em: 22 jun. 2021. https://doi.org/10.1016/j.jenvman.2012.06.014.
0301-4797
10.1016/j.jenvman.2012.06.014
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