Title :
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
fDate :
2/1/2000 12:00:00 AM
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;
Journal_Title :
Plasma Science, IEEE Transactions on
