The Prospects of Using Plasma-Optical Technologies for Air Disinfection
- Paper number
IAC-06-A1.P.2.07
- Author
Mr. Nikolai Polikarpov, Institute for Biomedical Problems, Russia
- Coauthor
Mr. Yakov Goldshtein, Russia
- Coauthor
Dr. Natalia Novikova, Institute for Biomedical Problems, Russia
- Coauthor
Mrs. Elena Deshevaya, Institute for Biomedical Problems, Russia
- Coauthor
Mr. Sergey Shashkovskiy, Russia
- Year
2006
- Abstract
The stay of man in premises with an artificial habitat, including manned space objects, requires that the controlled parameters of this habitat {pressure, oxygen concentration, toxin level, microorganism concentration} are monitored and maintained continuously within strictly regulated limits. For example, the International Space Station bacterial population currently includes dozens of kinds of vegetative microorganisms and spore formers belonging to the category of opportunistic microorganisms, such as Staphylococcus aureus, S.capitis, S.haemoliticus, Flavobacterium meningosepticum, Serratia marcescens, Streptococcus spp., and the potential biodestructors of structural materials, such as Bacillus polymyxa, B.subtilis, B.pumilus, Penicillium, Aspergillus, Cladosporium. It is obvious that it would not be reasonable to use chemical disinfection methods for ensuring the environmental, sanitation and microbiological safety a the space stations operating for a long time, since many of such methods are not compatible with life support systems. Currently one of efficient and environmentally safe methods is air treatment with pulse ultraviolet emission with continuous spectrum generated by xenon lamps. A research cycle was carried out in airtight cages to make comparative assessment of air disinfection from the spores of the Bacillus kind of bacteria with the use of air recirculators equipped with pulse xenon ultraviolet sources and regular mercury vapor lamps. It was demonstrated that the sporoidal efficiency of air disinfection with a pulse recirculator was equal to 65% and 95% at the device output with the bactericidal doses of 140 J \m3 and 380 J \m3, respectively. The ultraviolet recirculator based on amalgam mercury vapor lamps produced only 20% decline in spore concentration with the bactericidal volume doses of 900 J \m3. Theoretical computations and experimental research identified and substantiated the optimal parameters and conditions for using pulse emission sources. The possibility of developing highly efficient, small-size and environmentally clean devices for air disinfection in premises with an artificial habitat has been demonstrated. The work is done with support by Rosnauka contract #02.467.11.3005
- Abstract document
- Manuscript document
IAC-06-A1.P.2.07.pdf (🔒 authorized access only).
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