Washable antimicrobial polyester/aluminum air filter with a high capture efficiency and low pressure drop

Title
Washable antimicrobial polyester/aluminum air filter with a high capture efficiency and low pressure drop
Authors
정재희최동윤허기준강주희안은정정수호이병욱이혜문
Keywords
Antimicrobial filter; Bioaerosol; Washable; Aluminum; Air filter
Issue Date
2018-06
Publisher
Journal of hazardous materials
Citation
VOL 351-37
Abstract
Here, we introduce a reusable bifunctional polyester/aluminum (PET/Al) air filter for the high efficiency simultaneous capture and inactivation of airborne microorganisms. Both bacteria of Escherichia coli and Staphylococcus epidermidis were collected on the PET/Al filter with a high efficiency rate (∼99.99%) via the electrostatic interactions between the charged bacteria and fibers without sacrificing pressure drop. The PET/Al filter experienced a pressure drop approximately 10 times lower per thickness compared with a commercial high-efficiency particulate air filter. As the Al nanograins grew on the fibers, the antimicrobial activity against airborne E. coli and S. epidermidis improved to ∼94.8% and ∼96.9%, respectively, due to the reinforced hydrophobicity and surface roughness of the filter. Moreover, the capture and antimicrobial performances were stably maintained during a cyclic washing test of the PET/Al filter, indicative of its reusability. The PET/Al filter shows great potential for use in energy-efficient bioaerosol control systems suitable for indoor environments.
URI
http://pubs.kist.re.kr/handle/201004/67399
ISSN
0304-3894
Appears in Collections:
KIST Publication > Article
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