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dc.contributor.author
Zacarias, Silvia Mercedes
dc.contributor.author
Vaccari, María
dc.contributor.author
Alfano, Orlando Mario
dc.contributor.author
Irazoqui, Horacio Antonio
dc.contributor.author
Imoberdorf, Gustavo Eduardo
dc.date.available
2017-03-06T18:22:59Z
dc.date.issued
2010-07
dc.identifier.citation
Zacarias, Silvia Mercedes; Vaccari, María; Alfano, Orlando Mario; Irazoqui, Horacio Antonio; Imoberdorf, Gustavo Eduardo; Effect of the Radiation Flux on the Photocatalytic Inactivation of Spores of Bacillus Subtilis; Elsevier Science Sa; Journal Of Photochemistry And Photobiology A: Chemistry; 7-2010; 171-180
dc.identifier.issn
1010-6030
dc.identifier.uri
http://hdl.handle.net/11336/13562
dc.description.abstract
In this paper, the photocatalytic inactivation of dry spores of Bacillus subtilis dispersed on TiO2 films and irradiated with UV-A radiation (2.44–0.29mWcm-2) was studied. Experimental results indicate a minor reduction in the number of viable spores (69% of inactivation after 48 h of irradiation) when they were irradiated with UV-A radiation on borosilicate glass plates (without TiO2), confirming the resistance of spores to UV-A radiation. However, the number of viable spores significantly decreased when they were irradiated with UV-A under similar conditions but on plates coated with TiO2 (99.88% of inactivation after 24 h of irradiation), showing that dry spores of B. subtilis are vulnerable to photocatalytic inactivation. A simplified scheme was proposed to model the photocatalytic inactivation of B. subtilis, from which a kinetic expression was derived. Since the rate of photocatalytic inactivation is strongly dependent on the flux of the UV radiation on the TiO2 films, the radiation field was modeled by means of CFD software. Experimental results of spore inactivation were fitted with the derived kinetic expression, showing the inactivation rate has a square root dependence on the radiation flux reaching the photocatalyst film.
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
Inactivation
dc.subject
Spores
dc.subject
Bacillus Subtilis
dc.subject
Photocatalysis
dc.subject.classification
Ingeniería de Procesos Químicos
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Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Effect of the Radiation Flux on the Photocatalytic Inactivation of Spores of Bacillus Subtilis
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-03-01T17:49:28Z
dc.journal.pagination
171-180
dc.journal.pais
Países Bajos
dc.description.fil
Fil: Zacarias, Silvia Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina
dc.description.fil
Fil: Vaccari, María. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina
dc.description.fil
Fil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
dc.description.fil
Fil: Irazoqui, Horacio Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina
dc.description.fil
Fil: Imoberdorf, Gustavo Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
dc.journal.title
Journal Of Photochemistry And Photobiology A: Chemistry
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1010603010002285
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jphotochem.2010.06.021


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