UV treatment of microorganisms on artificially-contaminated surfaces using excimer and microwave UV lamps

Chemosphere
N ChristofiJ Sharp

Abstract

An XeBr excilamp having a peak emission at 283 nm, and microwave UV lamps with peak emissions at 253.7 nm that also generate ozone, have been tested for ability to eradicate high populations of microbial vegetative cells and spores (of bacteria and fungi) artificially added to filter surfaces. The study examined the energy required to completely eradicate large populations on filter surfaces. It was found that both the excilamp and microwave UV lamps were effective at killing large populations on surfaces with killing efficiency dependant on the type of organism, and, whether present in its vegetative or spore forms. The main killing factor is UV radiation following short treatment times. It is considered that for longer irradiation periods that are required to facilitate complete destruction of surface microorganisms, ozone and other oxidising species produced by microwave UV lamps would act to enhance microbial destruction.

References

Nov 28, 2001·Applied and Environmental Microbiology·J L Jacobs, G W Sundin
Jun 26, 2002·Letters in Applied Microbiology·A M AnpilovY Zadiraka
Sep 14, 2002·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·John G BartlettLuciana Borio
Mar 26, 2003·Proceedings of the National Academy of Sciences of the United States of America·Lawrence M WeinEdward H Kaplan
Apr 25, 2003·Journal of Veterinary Medicine. B, Infectious Diseases and Veterinary Public Health·R H Davies, M Breslin

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Citations

Dec 4, 2014·American Journal of Infection Control·Lasse Per PeterssonRalf-Peter Vonberg
Aug 21, 2013·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Galina G MatafonovaKarl G Linden
Feb 13, 2020·BMC Infectious Diseases·Wai SzetoDennis Y C Leung
Nov 3, 2010·Environmental Science & Technology·Eric A LutzTimothy J Buckley

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