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Inactivation of microorganisms in a flow-through photoreactor with an immobilized TiO2 layer

✍ Scribed by Lenka Belháčová; Josef Krýsa; Josef Geryk; Jaromír Jirkovský

Publisher
Wiley (John Wiley & Sons)
Year
1999
Tongue
English
Weight
181 KB
Volume
74
Category
Article
ISSN
0268-2575

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✦ Synopsis

A laboratory ýow-through photoreactor with an immobilized layer of (total volume of TiO 2 the liquid 5000 cm3, photoactive area 60 cm long and 30 cm wide ; irradiation source UV lamps Eversun, Osram, light intensity from 0.9 to 6.2 Â 10-9 Einstein cm-2 s-1) was tested for the inactivation of Escherichia coli (strain DH5a) and bacteriophage kNM1149. The kinetics of the deactivation were approximately ürst order and the initial reaction rate depended on the light intensity. At maximum intensity, the rate constants of the bacteria and viruses inactivation were 2.3 Â 10-4 and 7.2 Â 10-4 s-1, respectively. Bacterial inactivation was also accomplished with solar excitation.

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