Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol

Autores
Salomone, Vanesa Natalia; Meichtry, Jorge Martin; Schinelli, Guillermo; Leyva de Guglielmino, Ana Gabriela; Litter, Marta Irene
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The efficiency of the photochemical reduction of uranyl (UO22+) (0.25 mM, pH 3) was analyzed in theabsence and in the presence of 2-propanol (2-PrOH), evaluating the effect of anions (nitrate, acetate andperchlorate) and the use of quartz and glass photoreactors. A higher removal was observed under allconditions with the quartz photoreactor; the best system was that starting from uranyl nitrate, where a90% UO22+removal was attained after 15 min irradiation. In the absence of 2-PrOH, the acetate systemwas the only one where some U(VI) removal was observed (15% after 15 min in the quartz photoreactor)but, in the presence of the alcohol, the acetate system was the least reactive. Under irradiation, nitrateand acetate were consumed during the reaction, causing important effects on the uranyl conversion,while perchlorate was inactive. Uranium was removed from the system as a solid residue in the case ofnitrate- (as U(IV)) and perchlorate-containing systems (as U(VI)), while it remained in solution in thecase of the acetate systems. Mechanisms are proposed for the different conditions. The importance ofnitrate as a reducing agent of uranium species has not been previously reported. The use of uranyl nitrateand short-near UV?vis light seems to be the most advisable way of removing uranyl from solutions, inthe form of a stable precipitate.
Fil: Salomone, Vanesa Natalia. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Meichtry, Jorge Martin. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Schinelli, Guillermo. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
Fil: Leyva de Guglielmino, Ana Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; Argentina
Fil: Litter, Marta Irene. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
Materia
Photochemical reduction
U(VI)
U(IV)
2-Propanol
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:11336/103941
Acceder
id CONICETDig_c8989f4a06ccdd791dd4973ae9e13563
oai_identifier_str oai:ri.conicet.gov.ar:11336/103941
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanolSalomone, Vanesa NataliaMeichtry, Jorge MartinSchinelli, GuillermoLeyva de Guglielmino, Ana GabrielaLitter, Marta IrenePhotochemical reductionU(VI)U(IV)2-Propanolhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The efficiency of the photochemical reduction of uranyl (UO22+) (0.25 mM, pH 3) was analyzed in theabsence and in the presence of 2-propanol (2-PrOH), evaluating the effect of anions (nitrate, acetate andperchlorate) and the use of quartz and glass photoreactors. A higher removal was observed under allconditions with the quartz photoreactor; the best system was that starting from uranyl nitrate, where a90% UO22+removal was attained after 15 min irradiation. In the absence of 2-PrOH, the acetate systemwas the only one where some U(VI) removal was observed (15% after 15 min in the quartz photoreactor)but, in the presence of the alcohol, the acetate system was the least reactive. Under irradiation, nitrateand acetate were consumed during the reaction, causing important effects on the uranyl conversion,while perchlorate was inactive. Uranium was removed from the system as a solid residue in the case ofnitrate- (as U(IV)) and perchlorate-containing systems (as U(VI)), while it remained in solution in thecase of the acetate systems. Mechanisms are proposed for the different conditions. The importance ofnitrate as a reducing agent of uranium species has not been previously reported. The use of uranyl nitrateand short-near UV?vis light seems to be the most advisable way of removing uranyl from solutions, inthe form of a stable precipitate.Fil: Salomone, Vanesa Natalia. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Meichtry, Jorge Martin. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Schinelli, Guillermo. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); ArgentinaFil: Leyva de Guglielmino, Ana Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; ArgentinaFil: Litter, Marta Irene. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; ArgentinaElsevier Science Sa2014-03info: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/11336/103941Salomone, Vanesa Natalia; Meichtry, Jorge Martin; Schinelli, Guillermo; Leyva de Guglielmino, Ana Gabriela; Litter, Marta Irene; Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 277; 3-2014; 19-261010-6030CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1010603013005030info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2013.12.006info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:19:11Zoai:ri.conicet.gov.ar:11336/103941instacron: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 10:19:11.233CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
title Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
spellingShingle Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
Salomone, Vanesa Natalia
Photochemical reduction
U(VI)
U(IV)
2-Propanol
title_short Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
title_full Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
title_fullStr Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
title_full_unstemmed Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
title_sort Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
dc.creator.none.fl_str_mv Salomone, Vanesa Natalia
Meichtry, Jorge Martin
Schinelli, Guillermo
Leyva de Guglielmino, Ana Gabriela
Litter, Marta Irene
author Salomone, Vanesa Natalia
author_facet Salomone, Vanesa Natalia
Meichtry, Jorge Martin
Schinelli, Guillermo
Leyva de Guglielmino, Ana Gabriela
Litter, Marta Irene
author_role author
author2 Meichtry, Jorge Martin
Schinelli, Guillermo
Leyva de Guglielmino, Ana Gabriela
Litter, Marta Irene
author2_role author
author
author
author
dc.subject.none.fl_str_mv Photochemical reduction
U(VI)
U(IV)
2-Propanol
topic Photochemical reduction
U(VI)
U(IV)
2-Propanol
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The efficiency of the photochemical reduction of uranyl (UO22+) (0.25 mM, pH 3) was analyzed in theabsence and in the presence of 2-propanol (2-PrOH), evaluating the effect of anions (nitrate, acetate andperchlorate) and the use of quartz and glass photoreactors. A higher removal was observed under allconditions with the quartz photoreactor; the best system was that starting from uranyl nitrate, where a90% UO22+removal was attained after 15 min irradiation. In the absence of 2-PrOH, the acetate systemwas the only one where some U(VI) removal was observed (15% after 15 min in the quartz photoreactor)but, in the presence of the alcohol, the acetate system was the least reactive. Under irradiation, nitrateand acetate were consumed during the reaction, causing important effects on the uranyl conversion,while perchlorate was inactive. Uranium was removed from the system as a solid residue in the case ofnitrate- (as U(IV)) and perchlorate-containing systems (as U(VI)), while it remained in solution in thecase of the acetate systems. Mechanisms are proposed for the different conditions. The importance ofnitrate as a reducing agent of uranium species has not been previously reported. The use of uranyl nitrateand short-near UV?vis light seems to be the most advisable way of removing uranyl from solutions, inthe form of a stable precipitate.
Fil: Salomone, Vanesa Natalia. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Meichtry, Jorge Martin. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Schinelli, Guillermo. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
Fil: Leyva de Guglielmino, Ana Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; Argentina
Fil: Litter, Marta Irene. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
description The efficiency of the photochemical reduction of uranyl (UO22+) (0.25 mM, pH 3) was analyzed in theabsence and in the presence of 2-propanol (2-PrOH), evaluating the effect of anions (nitrate, acetate andperchlorate) and the use of quartz and glass photoreactors. A higher removal was observed under allconditions with the quartz photoreactor; the best system was that starting from uranyl nitrate, where a90% UO22+removal was attained after 15 min irradiation. In the absence of 2-PrOH, the acetate systemwas the only one where some U(VI) removal was observed (15% after 15 min in the quartz photoreactor)but, in the presence of the alcohol, the acetate system was the least reactive. Under irradiation, nitrateand acetate were consumed during the reaction, causing important effects on the uranyl conversion,while perchlorate was inactive. Uranium was removed from the system as a solid residue in the case ofnitrate- (as U(IV)) and perchlorate-containing systems (as U(VI)), while it remained in solution in thecase of the acetate systems. Mechanisms are proposed for the different conditions. The importance ofnitrate as a reducing agent of uranium species has not been previously reported. The use of uranyl nitrateand short-near UV?vis light seems to be the most advisable way of removing uranyl from solutions, inthe form of a stable precipitate.
publishDate 2014
dc.date.none.fl_str_mv 2014-03
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/11336/103941
Salomone, Vanesa Natalia; Meichtry, Jorge Martin; Schinelli, Guillermo; Leyva de Guglielmino, Ana Gabriela; Litter, Marta Irene; Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 277; 3-2014; 19-26
1010-6030
CONICET Digital
CONICET
url http://hdl.handle.net/11336/103941
identifier_str_mv Salomone, Vanesa Natalia; Meichtry, Jorge Martin; Schinelli, Guillermo; Leyva de Guglielmino, Ana Gabriela; Litter, Marta Irene; Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 277; 3-2014; 19-26
1010-6030
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/abs/pii/S1010603013005030
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2013.12.006
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 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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