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dc.contributor.author
Meichtry, Jorge Martin
dc.contributor.author
Colbeau Justin, Christophe
dc.contributor.author
Custo, Graciela Susana
dc.contributor.author
Litter, Marta Irene
dc.date.available
2020-03-11T18:21:18Z
dc.date.issued
2014-08
dc.identifier.citation
Meichtry, Jorge Martin; Colbeau Justin, Christophe; Custo, Graciela Susana; Litter, Marta Irene; Preservation of the photocatalytic activity of TiO2 by EDTA in the reductive transformation of Cr(VI). Studies by Time Resolved Microwave Conductivity; Elsevier Science; Catalysis Today; 224; 8-2014; 236-243
dc.identifier.issn
0920-5861
dc.identifier.uri
http://hdl.handle.net/11336/99168
dc.description.abstract
P25 TiO2 was found to be deactivated after Cr(VI) (0.8 mM) photocatalytic experiments at pH 2 in the absence of EDTA, but this deactivation was not found in the presence of the organic compound (2 mM), which preserves the activity of the photocatalyst. The results were confirmed by TRMC measurements. The preservation of the activity by the presence of EDTA can be a general behavior of reducing oligocarboxylic acids present together with Cr(VI) in the photocatalytic system, where Cr(III) soluble complexes can be formed and Cr(III) deposition onto the TiO2 surface is prevented. The treatment of a set of diluted Cr(VI) solutions (0.8 mM) in successive experiments with the reused photocatalyst was more efficient for Cr(VI) removal in the presence of EDTA (2 mM, 700 s total irradiation time) than the use of a more concentrated sample (Cr(VI), EDTA) with the same photocatalyst submitted to a longer irradiation (900 s), indicating a good strategy for application. A change in the kinetics from a pseudo-first order at the lowest concentration to an almost zero order at the highest concentration takes place and is analyzed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CR(VI)
dc.subject
EDTA
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PHOTOCATALYSIS
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TIO2
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TRMC
dc.subject.classification
Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.subject.classification
Otras Ingeniería Química
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.subject.classification
Otras Ingeniería del Medio Ambiente
dc.subject.classification
Ingeniería del Medio Ambiente
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Preservation of the photocatalytic activity of TiO2 by EDTA in the reductive transformation of Cr(VI). Studies by Time Resolved Microwave Conductivity
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-02-27T18:45:45Z
dc.journal.volume
224
dc.journal.pagination
236-243
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
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: Colbeau Justin, Christophe. Universite de Paris XI. Laboratoire de Chimie Physique; Francia. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Custo, Graciela Susana. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
dc.description.fil
Fil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina. 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.journal.title
Catalysis Today
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cattod.2013.10.021
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586113004963
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