The development of photosensitized pulsed and continuous ultraviolet decontamination techniques for surfaces and solutions

Author

McDonald, Kenneth F. ; Curry, Randy D. ; Clevenger, Thomas E. ; Brazos, Blaise J. ; Unklesbay, Kenneth ; Eisenstark, Abraham ; Baker, Sarah ; Golden, Jeffry ; Morgan, Robert

Author_Institution

Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA

Volume

28

Issue

1

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

89

Lastpage

96

Abstract

The experimental results of a decontamination process that uses an ultraviolet (UV) light and a chemical photosensitizer for disinfecting surfaces and solutions are reported. Reduction in the microbial viability as a function of applied UV fluence and initial photosensitizer concentration is presented for the inactivation of both the vegetative and spore forms of Bacillus subtilis niger. Encouraging results have been obtained with both aqueous solutions and surfaces; and with both continuous and pulsed UV light sources. Extrapolation of the results and an estimate of the process speed and efficiency permit a comparison with other decontamination methods

Keywords

biological effects of ultraviolet radiation; cellular effects of radiation; Bacillus subtilis niger; applied UV fluence; aqueous solutions; chemical photosensitizer; continuous UV light sources; continuous ultraviolet decontamination techniques; decontamination methods; extrapolation; microbial viability; photosensitized pulsed; pulsed UV light sources; solutions; spore forms; surface disinfection; surfaces; vegetative forms; Chemical processes; Civil engineering; Decontamination; Extrapolation; Fungi; Helium; Light sources; Missiles; Spraying; System performance;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.842871

Filename

842871