Please use this identifier to cite or link to this item:
|Title:||Photocatalytic inactivation of airborne bacteria in a continuous-flow reactor|
|Citation:||Pal, A., Pehkonen, S.O., Yu, L.E., Ray, M.B. (2008-10-15). Photocatalytic inactivation of airborne bacteria in a continuous-flow reactor. Industrial and Engineering Chemistry Research 47 (20) : 7580-7585. ScholarBank@NUS Repository. https://doi.org/10.1021/ie701739g|
|Abstract:||In this study, a continuous annular reactor was used to characterize the TiO2-mediated inactivation of an aerosolized Gram-negative bacterium, Escherichia coli K-12 (ATCC 10798), by varying UV-A intensity (0.5-3.4 mW/cm2), relative humidity (RH) (from 51 ± 0.61 to 85 ± 4.7%), and photocatalyst loading (960 and 1516 mg/m2) at an air flow rate of 1 L/min. Inactivation rate of E. coli K-12 increased with an increase in TiO2 loading, UV-intensity, and RH. A UV-A dose of 0.03-0.204 J/cm2 at an average UV-A intensity of 0.5-3.4 mW/cm2, at a residence time of 1.1 min, is sufficient to fully and continuously inactivate E. coli K-12 passing through the reactor. The photocatalytic inactivation rates obtained in the continuous flow reactor compared well with our earlier batch inactivation rates conducted at a UV-A intensity of 0.015 mW/cm2 and a TiO2 loading of 1516 mg/m2. This demonstrates the possibility of scaling up of the photocatalytic inactivation process for bioaerosol based on batch kinetic data. © 2008 American Chemical Society.|
|Source Title:||Industrial and Engineering Chemistry Research|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 15, 2019
WEB OF SCIENCETM
checked on Jan 7, 2019
checked on Sep 14, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.