New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol

Autores
Salomone, Vanesa Natalia; Meichtry, Jorge Martin; Zampieri, Guillermo Enrique; Litter, Marta Irene
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The efficiency of heterogeneous photocatalysis with TiO2 under UV light (HP) for the removal of uranyl ion from water (0.25mM, pH 3) in the presence of 2-propanol (2-PrOH) was evaluated. The effects of the counterion of the uranyl salt or anions present in the system and the use of quartz and glass photoreactors were analyzed. High U(VI) removal efficiencies were obtained, reaching 100% when starting from uranyl nitrate and 1M 2-PrOH after 60min in a quartz photoreactor. The reaction in the absence of 2-PrOH was rather low, reaching around 50% in 120min under the same conditions. The photocatalytic reaction yield was similar when the reaction started from uranyl perchlorate, but systems where acetate was present showed less removal, both in the absence and the presence of 2-PrOH. Yields with the quartz photoreactor were always higher than those with the glass reactor.Kinetic and mechanistic analyses were performed. Comparisons with the photochemical systems in the absence of TiO2 were made. The results indicated that the uranyl nitrate system in the presence of 2-PrOH gave similar results with and without TiO2, but the other systems gave higher removal yields when TiO2 was used. The proposed mechanism suggests that U(VI)/U(V) reduction is mediated by conduction band electrons and not by reducing organic radicals, a distinctive feature of the system. For all studied conditions, the photocatalytic treatment allowed a better recovering of the precipitated uranium.
Fil: Salomone, Vanesa Natalia. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Meichtry, Jorge Martin. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zampieri, Guillermo Enrique. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Materia
2-PROPANOL
HETEROGENEOUS PHOTOCATALYSIS
TIO2
U(IV)
U(V)
U(VI)
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:11336/98730
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/98730
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanolSalomone, Vanesa NataliaMeichtry, Jorge MartinZampieri, Guillermo EnriqueLitter, Marta Irene2-PROPANOLHETEROGENEOUS PHOTOCATALYSISTIO2U(IV)U(V)U(VI)https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The efficiency of heterogeneous photocatalysis with TiO2 under UV light (HP) for the removal of uranyl ion from water (0.25mM, pH 3) in the presence of 2-propanol (2-PrOH) was evaluated. The effects of the counterion of the uranyl salt or anions present in the system and the use of quartz and glass photoreactors were analyzed. High U(VI) removal efficiencies were obtained, reaching 100% when starting from uranyl nitrate and 1M 2-PrOH after 60min in a quartz photoreactor. The reaction in the absence of 2-PrOH was rather low, reaching around 50% in 120min under the same conditions. The photocatalytic reaction yield was similar when the reaction started from uranyl perchlorate, but systems where acetate was present showed less removal, both in the absence and the presence of 2-PrOH. Yields with the quartz photoreactor were always higher than those with the glass reactor.Kinetic and mechanistic analyses were performed. Comparisons with the photochemical systems in the absence of TiO2 were made. The results indicated that the uranyl nitrate system in the presence of 2-PrOH gave similar results with and without TiO2, but the other systems gave higher removal yields when TiO2 was used. The proposed mechanism suggests that U(VI)/U(V) reduction is mediated by conduction band electrons and not by reducing organic radicals, a distinctive feature of the system. For all studied conditions, the photocatalytic treatment allowed a better recovering of the precipitated uranium.Fil: Salomone, Vanesa Natalia. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Meichtry, Jorge Martin. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Zampieri, Guillermo Enrique. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaElsevier Science Sa2015-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/98730Salomone, Vanesa Natalia; Meichtry, Jorge Martin; Zampieri, Guillermo Enrique; Litter, Marta Irene; New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol; Elsevier Science Sa; Chemical Engineering Journal; 261; 2-2015; 27-351385-8947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385894714007220info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2014.06.001info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:32:45Zoai:ri.conicet.gov.ar:11336/98730instacron: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:34982025-09-29 09:32:46.042CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol
title New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol
spellingShingle New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol
Salomone, Vanesa Natalia
2-PROPANOL
HETEROGENEOUS PHOTOCATALYSIS
TIO2
U(IV)
U(V)
U(VI)
title_short New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol
title_full New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol
title_fullStr New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol
title_full_unstemmed New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol
title_sort New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol
dc.creator.none.fl_str_mv Salomone, Vanesa Natalia
Meichtry, Jorge Martin
Zampieri, Guillermo Enrique
Litter, Marta Irene
author Salomone, Vanesa Natalia
author_facet Salomone, Vanesa Natalia
Meichtry, Jorge Martin
Zampieri, Guillermo Enrique
Litter, Marta Irene
author_role author
author2 Meichtry, Jorge Martin
Zampieri, Guillermo Enrique
Litter, Marta Irene
author2_role author
author
author
dc.subject.none.fl_str_mv 2-PROPANOL
HETEROGENEOUS PHOTOCATALYSIS
TIO2
U(IV)
U(V)
U(VI)
topic 2-PROPANOL
HETEROGENEOUS PHOTOCATALYSIS
TIO2
U(IV)
U(V)
U(VI)
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 efficiency of heterogeneous photocatalysis with TiO2 under UV light (HP) for the removal of uranyl ion from water (0.25mM, pH 3) in the presence of 2-propanol (2-PrOH) was evaluated. The effects of the counterion of the uranyl salt or anions present in the system and the use of quartz and glass photoreactors were analyzed. High U(VI) removal efficiencies were obtained, reaching 100% when starting from uranyl nitrate and 1M 2-PrOH after 60min in a quartz photoreactor. The reaction in the absence of 2-PrOH was rather low, reaching around 50% in 120min under the same conditions. The photocatalytic reaction yield was similar when the reaction started from uranyl perchlorate, but systems where acetate was present showed less removal, both in the absence and the presence of 2-PrOH. Yields with the quartz photoreactor were always higher than those with the glass reactor.Kinetic and mechanistic analyses were performed. Comparisons with the photochemical systems in the absence of TiO2 were made. The results indicated that the uranyl nitrate system in the presence of 2-PrOH gave similar results with and without TiO2, but the other systems gave higher removal yields when TiO2 was used. The proposed mechanism suggests that U(VI)/U(V) reduction is mediated by conduction band electrons and not by reducing organic radicals, a distinctive feature of the system. For all studied conditions, the photocatalytic treatment allowed a better recovering of the precipitated uranium.
Fil: Salomone, Vanesa Natalia. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Meichtry, Jorge Martin. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Zampieri, Guillermo Enrique. Universidad Nacional de Cuyo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
description The efficiency of heterogeneous photocatalysis with TiO2 under UV light (HP) for the removal of uranyl ion from water (0.25mM, pH 3) in the presence of 2-propanol (2-PrOH) was evaluated. The effects of the counterion of the uranyl salt or anions present in the system and the use of quartz and glass photoreactors were analyzed. High U(VI) removal efficiencies were obtained, reaching 100% when starting from uranyl nitrate and 1M 2-PrOH after 60min in a quartz photoreactor. The reaction in the absence of 2-PrOH was rather low, reaching around 50% in 120min under the same conditions. The photocatalytic reaction yield was similar when the reaction started from uranyl perchlorate, but systems where acetate was present showed less removal, both in the absence and the presence of 2-PrOH. Yields with the quartz photoreactor were always higher than those with the glass reactor.Kinetic and mechanistic analyses were performed. Comparisons with the photochemical systems in the absence of TiO2 were made. The results indicated that the uranyl nitrate system in the presence of 2-PrOH gave similar results with and without TiO2, but the other systems gave higher removal yields when TiO2 was used. The proposed mechanism suggests that U(VI)/U(V) reduction is mediated by conduction band electrons and not by reducing organic radicals, a distinctive feature of the system. For all studied conditions, the photocatalytic treatment allowed a better recovering of the precipitated uranium.
publishDate 2015
dc.date.none.fl_str_mv 2015-02
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/11336/98730
Salomone, Vanesa Natalia; Meichtry, Jorge Martin; Zampieri, Guillermo Enrique; Litter, Marta Irene; New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol; Elsevier Science Sa; Chemical Engineering Journal; 261; 2-2015; 27-35
1385-8947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/98730
identifier_str_mv Salomone, Vanesa Natalia; Meichtry, Jorge Martin; Zampieri, Guillermo Enrique; Litter, Marta Irene; New insights in the heterogeneous photocatalytic removal of U(VI) in aqueous solution in the presence of 2-propanol; Elsevier Science Sa; Chemical Engineering Journal; 261; 2-2015; 27-35
1385-8947
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385894714007220
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2014.06.001
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
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
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 13.070432

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