ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
ISSN : 2287-7509(Online)
공기청정기와 공기청정장치에 의한 미생물과 바이러스의 제거 효과
The Effect of Air Cleaner and Air-cleaning Devices for the Removal of Microorganisms and Viruses
Received 9 July 2004, accepted 9 September 2004
Abstract
The performance of various air-cleaning devices and an assembled air cleaner has been evaluated for theremoval of biological pollutants in indoor air. Bacteria, fungi, and viruses were sprayed in a test chamber,and air samples in the chamber were taken for analysis. Air-cleaning devices - UV lamp, ion generator, anUV LED and plasma electricity dust collector - were tested for their ability in the removal of microorganismsin the air. The UV lamp and the ion generator tested exhbited complete sterilization effect within 4hrs ofoperation. Other devices were less effective: The extent of removal by the UV LED and the plasmaelectricity dust collector after 6hrs of operation was about 20% to 82%, depending on the microorganismstested. The performance of an assembled air cleaner was much superior to individual air-cleaning devices:the extent of removal being 97.6%, 99.1%, 98.7%, and 93.7% for Staphylococcus aureus (Gram(+) bacteria),Escherichia coli (Gram(-) bacteria), Aspergillus niger and Penicillium funiculosum (fungi), respectively, after3hrs of operation. The removal of influenza virus was even more effective, with 99.9% of removal within25min of operation. The results show that the air cleaner is effective for the removal of microbial and viralpathogens in the air.
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