Abstract：
:The photocatalytic elimination of microorganisms from indoor air in realistic conditions and the feasibility of simultaneous elimination of chemical contaminants have been studied at laboratory scale. Transparent polymeric monoliths have been coated with sol-gel TiO(2) films and used as photocatalyst to treat real indoor air in a laboratory-scale single-step annular photocatalytic reactor. The analytical techniques used to characterize the air quality and analyze the results of the photocatalytic tests were: colony counting, microscopy and PCR with subsequent sequencing for microbial quantification and identification; automated thermal desorption coupled to gas chromatography with mass spectrometry detection for chemical analysis. The first experiments performed proved that photocatalysis based on UVA-irradiated TiO(2) for the reduction of the concentration of bacteria in the air could compete with the conventional photolytic treatment with UVC radiation, more expensive and hazardous. Simultaneously to the disinfection, the concentration of volatile organic compounds was greatly reduced, which adds value to this technology for real applications. The fungal colony number was not apparently modified.
journal_name
Chemospherejournal_title
Chemosphereauthors
Sánchez B,Sánchez-Muñoz M,Muñoz-Vicente M,Cobas G,Portela R,Suárez S,González AE,Rodríguez N,Amils Rdoi
10.1016/j.chemosphere.2012.01.050subject
Has Abstractpub_date
2012-05-01 00:00:00pages
625-30issue
6eissn
0045-6535issn
1879-1298pii
S0045-6535(12)00142-7journal_volume
87pub_type
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