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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
dc.subject.classification 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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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)