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dc.contributor.author
Salomone, Vanesa Natalia
dc.contributor.author
Meichtry, Jorge Martin
dc.contributor.author
Schinelli, Guillermo
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Leyva de Guglielmino, Ana Gabriela
dc.contributor.author
Litter, Marta Irene
dc.date.available
2020-04-29T17:42:34Z
dc.date.issued
2014-03
dc.identifier.citation
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
dc.identifier.issn
1010-6030
dc.identifier.uri
http://hdl.handle.net/11336/103941
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Photochemical reduction
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U(VI)
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U(IV)
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2-Propanol
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Ciencias Medioambientales
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Photochemical reduction of U(VI) in aqueous solution in the presence of 2-propanol
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-04-28T14:07:02Z
dc.journal.volume
277
dc.journal.pagination
19-26
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
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
dc.description.fil
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
dc.description.fil
Fil: Schinelli, Guillermo. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
dc.description.fil
Fil: Leyva de Guglielmino, Ana Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; Argentina
dc.description.fil
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
dc.journal.title
Journal of Photochemistry and Photobiology A: Chemistry
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1010603013005030
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jphotochem.2013.12.006
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