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- Title
Nonthermal plasma air disinfection for the inactivation of airborne microorganisms in an experimental chamber and indoor air.
- Authors
Li, Ye; Wei, Lanfen; Lin, Junming; Xie, Zhongyi; Lu, Longxi; Pan, Xieshang; Xu, Ji; Cai, Ran
- Abstract
Aims Airborne transmission of diseases presents a serious threat to human health, so effective air disinfection technology to eliminate microorganisms in indoor air is very important. This study evaluated the effectiveness of a non-thermal plasma (NTP) air disinfector in both laboratory experiments and real environments. Methods and results An experimental chamber was artificially polluted with a bioaerosol containing bacteria or viruses. Additionally, classroom environments with and without people present were used in field tests. Airborne microbial and particle concentrations were quantified. A 3.0 log10 reduction in the initial load was achieved when a virus-containing aerosol was disinfected for 60 min and a bacteria-containing aerosol was disinfected for 90 min. In the field test, when no people were present in the room, NTP disinfection decreased the airborne microbial and particle concentrations (P < 0.05). When people were present in the room, their constant activity continuously contaminated the indoor air, but all airborne indicators decreased (P < 0.05) except for planktonic bacteria (P = 0.094). Conclusions NTP effectively inactivated microorganisms and particles in indoor air.
- Subjects
NON-thermal plasmas; MICROBIAL inactivation; AIRBORNE infection; INFECTIOUS disease transmission; CLASSROOM environment
- Publication
Journal of Applied Microbiology, 2024, Vol 135, Issue 4, p1
- ISSN
1364-5072
- Publication type
Article
- DOI
10.1093/jambio/lxae078