Nonthermal plasma air disinfection for the inactivation of airborne microorganisms in an experimental chamber and indoor air.
J Appl Microbiol
; 135(4)2024 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-38520159
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 ANDRESULTS:
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.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bactérias
/
Desinfecção
/
Poluição do Ar em Ambientes Fechados
/
Microbiologia do Ar
/
Gases em Plasma
Limite:
Humans
Idioma:
En
Revista:
J Appl Microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China