Disinfection of indoor air microorganisms in stack room of university library using gaseous chlorine dioxide

As with all indoor public spaces in Taiwan, the stack rooms in public libraries should meet the air quality guidelines laid down by the Taiwan Environmental Protection Administration. Accordingly, utilizing a university library in Taiwan for experimental purposes, this study investigates the efficie...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2015-02, Vol.187 (2), p.17-17, Article 17
Main Authors: Hsu, Ching-Shan, Lu, Ming-Chun, Huang, Da-Ji
Format: Article
Language:English
Subjects:
Academic libraries
Aerosols
Aerosols - analysis
Air Microbiology
Air pollution
Air Pollution, Indoor - analysis
Air Pollution, Indoor - statistics & numerical data
Air quality
Air quality measurements
Airborne microorganisms
Atmospheric Protection/Air Quality Control/Air Pollution
Bacteria
Bacteria - drug effects
Bacteria - growth & development
Chlorine
Chlorine Compounds - toxicity
Chlorine dioxide
Disinfectants - toxicity
Disinfection
Disinfection & disinfectants
Disinfection - methods
Earth and Environmental Science
Ecology
Ecotoxicology
Efficiency
Environment
Environmental Management
Environmental monitoring
Environmental Monitoring - methods
Environmental protection
Fungi
Fungi - drug effects
Fungi - growth & development
Indoor air quality
Indoor environments
Librarians
Library collections
Lighting
Microorganisms
Monitoring/Environmental Analysis
Outdoor air quality
Oxides - toxicity
Public spaces
Taiwan
Universities
Vacations
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Summary:As with all indoor public spaces in Taiwan, the stack rooms in public libraries should meet the air quality guidelines laid down by the Taiwan Environmental Protection Administration. Accordingly, utilizing a university library in Taiwan for experimental purposes, this study investigates the efficiency of gaseous chlorine dioxide (ClO 2 ) as a disinfection agent when applied using three different treatment modes, namely a single-daily disinfection mode (SIM), a twice-daily disinfection mode (TWM), and a triple-daily disinfection mode (TRM). For each treatment mode, the ClO 2 is applied using an ultrasonic aerosol device and is performed both under natural lighting conditions and under artificial lighting conditions. The indoor air quality is evaluated before and after each treatment session by measuring the bioaerosol levels of bacteria and fungi. The results show that for all three disinfection modes, the application of ClO 2 reduces the indoor bacteria and fungi concentrations to levels lower than those specified by the Taiwan EPA (i.e., bacteria
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-014-4235-2