Phenol depletion by thermally activated peroxydisulfate at 70 °C

Autores
Mora, Veronica Cecilia; Rosso, Janina Alejandra; Martire, Daniel Osvaldo; Gonzalez, Monica Cristina
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The ability of thermal activated peroxydisulfate (PS) of mineralizing phenol at 70 C from contaminated waters is investigated. Phenol in concentrations of 104 to 5 104 M is quantitatively depleted by 5 103 to 102 M activated PS in 15 min of reaction. However, mineralization of the organic carbon is not observed. Instead, an insoluble phenol polymer-type product is formed. A reaction mechanism including the formation of phenoxyl radicals and validated by computer simulations is proposed. High molecular weight phenolic products are formed by phenoxyl radical H-abstraction reactions. This is not the case for the room temperature degradation of phenol by sulfate radicals where sulfate addition to the aromatic ring mainly leads to the generation of hydroxycyclohexadienyl radicals leading to hydroxybenzenes and oxidized open chain products. Therefore, a change in the reaction mechanism is observed with increasing temperature, and thermal activation of PS at 70 C does not lead to the mineralization of phenol. Thus PS activation at 70 C may be considered a potential method to reduce the load of phenol in polluted waters by polymerization.
Fil: Mora, Veronica Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Rosso, Janina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Martire, Daniel Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Materia
SULFATE RADICALS
PEROXYDISULFATE
PHENOL
THERMAL ACTIVATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/280879
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/280879
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Phenol depletion by thermally activated peroxydisulfate at 70 °CMora, Veronica CeciliaRosso, Janina AlejandraMartire, Daniel OsvaldoGonzalez, Monica CristinaSULFATE RADICALSPEROXYDISULFATEPHENOLTHERMAL ACTIVATIONhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The ability of thermal activated peroxydisulfate (PS) of mineralizing phenol at 70 C from contaminated waters is investigated. Phenol in concentrations of 104 to 5 104 M is quantitatively depleted by 5 103 to 102 M activated PS in 15 min of reaction. However, mineralization of the organic carbon is not observed. Instead, an insoluble phenol polymer-type product is formed. A reaction mechanism including the formation of phenoxyl radicals and validated by computer simulations is proposed. High molecular weight phenolic products are formed by phenoxyl radical H-abstraction reactions. This is not the case for the room temperature degradation of phenol by sulfate radicals where sulfate addition to the aromatic ring mainly leads to the generation of hydroxycyclohexadienyl radicals leading to hydroxybenzenes and oxidized open chain products. Therefore, a change in the reaction mechanism is observed with increasing temperature, and thermal activation of PS at 70 C does not lead to the mineralization of phenol. Thus PS activation at 70 C may be considered a potential method to reduce the load of phenol in polluted waters by polymerization.Fil: Mora, Veronica Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Rosso, Janina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Martire, Daniel Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaPergamon-Elsevier Science Ltd2011-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/280879Mora, Veronica Cecilia; Rosso, Janina Alejandra; Martire, Daniel Osvaldo; Gonzalez, Monica Cristina; Phenol depletion by thermally activated peroxydisulfate at 70 °C; Pergamon-Elsevier Science Ltd; Chemosphere; 84; 9; 5-2011; 1270-12750045-6535CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653511004796info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2011.04.062info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-26T10:06:37Zoai:ri.conicet.gov.ar:11336/280879instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-02-26 10:06:37.944CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Phenol depletion by thermally activated peroxydisulfate at 70 °C
title Phenol depletion by thermally activated peroxydisulfate at 70 °C
spellingShingle Phenol depletion by thermally activated peroxydisulfate at 70 °C
Mora, Veronica Cecilia
SULFATE RADICALS
PEROXYDISULFATE
PHENOL
THERMAL ACTIVATION
title_short Phenol depletion by thermally activated peroxydisulfate at 70 °C
title_full Phenol depletion by thermally activated peroxydisulfate at 70 °C
title_fullStr Phenol depletion by thermally activated peroxydisulfate at 70 °C
title_full_unstemmed Phenol depletion by thermally activated peroxydisulfate at 70 °C
title_sort Phenol depletion by thermally activated peroxydisulfate at 70 °C
dc.creator.none.fl_str_mv Mora, Veronica Cecilia
Rosso, Janina Alejandra
Martire, Daniel Osvaldo
Gonzalez, Monica Cristina
author Mora, Veronica Cecilia
author_facet Mora, Veronica Cecilia
Rosso, Janina Alejandra
Martire, Daniel Osvaldo
Gonzalez, Monica Cristina
author_role author
author2 Rosso, Janina Alejandra
Martire, Daniel Osvaldo
Gonzalez, Monica Cristina
author2_role author
author
author
dc.subject.none.fl_str_mv SULFATE RADICALS
PEROXYDISULFATE
PHENOL
THERMAL ACTIVATION
topic SULFATE RADICALS
PEROXYDISULFATE
PHENOL
THERMAL ACTIVATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The ability of thermal activated peroxydisulfate (PS) of mineralizing phenol at 70 C from contaminated waters is investigated. Phenol in concentrations of 104 to 5 104 M is quantitatively depleted by 5 103 to 102 M activated PS in 15 min of reaction. However, mineralization of the organic carbon is not observed. Instead, an insoluble phenol polymer-type product is formed. A reaction mechanism including the formation of phenoxyl radicals and validated by computer simulations is proposed. High molecular weight phenolic products are formed by phenoxyl radical H-abstraction reactions. This is not the case for the room temperature degradation of phenol by sulfate radicals where sulfate addition to the aromatic ring mainly leads to the generation of hydroxycyclohexadienyl radicals leading to hydroxybenzenes and oxidized open chain products. Therefore, a change in the reaction mechanism is observed with increasing temperature, and thermal activation of PS at 70 C does not lead to the mineralization of phenol. Thus PS activation at 70 C may be considered a potential method to reduce the load of phenol in polluted waters by polymerization.
Fil: Mora, Veronica Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Rosso, Janina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Martire, Daniel Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
description The ability of thermal activated peroxydisulfate (PS) of mineralizing phenol at 70 C from contaminated waters is investigated. Phenol in concentrations of 104 to 5 104 M is quantitatively depleted by 5 103 to 102 M activated PS in 15 min of reaction. However, mineralization of the organic carbon is not observed. Instead, an insoluble phenol polymer-type product is formed. A reaction mechanism including the formation of phenoxyl radicals and validated by computer simulations is proposed. High molecular weight phenolic products are formed by phenoxyl radical H-abstraction reactions. This is not the case for the room temperature degradation of phenol by sulfate radicals where sulfate addition to the aromatic ring mainly leads to the generation of hydroxycyclohexadienyl radicals leading to hydroxybenzenes and oxidized open chain products. Therefore, a change in the reaction mechanism is observed with increasing temperature, and thermal activation of PS at 70 C does not lead to the mineralization of phenol. Thus PS activation at 70 C may be considered a potential method to reduce the load of phenol in polluted waters by polymerization.
publishDate 2011
dc.date.none.fl_str_mv 2011-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/280879
Mora, Veronica Cecilia; Rosso, Janina Alejandra; Martire, Daniel Osvaldo; Gonzalez, Monica Cristina; Phenol depletion by thermally activated peroxydisulfate at 70 °C; Pergamon-Elsevier Science Ltd; Chemosphere; 84; 9; 5-2011; 1270-1275
0045-6535
CONICET Digital
CONICET
url http://hdl.handle.net/11336/280879
identifier_str_mv Mora, Veronica Cecilia; Rosso, Janina Alejandra; Martire, Daniel Osvaldo; Gonzalez, Monica Cristina; Phenol depletion by thermally activated peroxydisulfate at 70 °C; Pergamon-Elsevier Science Ltd; Chemosphere; 84; 9; 5-2011; 1270-1275
0045-6535
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0045653511004796
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.chemosphere.2011.04.062
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.176822

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