Antimicrobial Air Filters Using Natural Sea Salt Particles for Deactivating Airborne Bacterial Particles

Sang Bin Jeong, Ki Joon Heo and Byung Uk Lee
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Sang Bin Jeong: Graduate School of Energy and Environment, Korea University, Seoul 02841, Korea
Ki Joon Heo: Aerosol and Bioengineering Laboratory, College of Engineering, Konkuk University, Seoul 05029, Korea
Byung Uk Lee: Aerosol and Bioengineering Laboratory, College of Engineering, Konkuk University, Seoul 05029, Korea

IJERPH, 2019, vol. 17, issue 1, 1-10

Abstract: We developed an antimicrobial air filter using natural sea salt (NSS) particles. Airborne NSS particles were produced via an aerosol process and were continuously coated onto the surface of an air filter under various deposition times. The filtration efficiency and bactericidal performance of the NSS-coated filter against aerosolized bacterial particles ( Staphylococcus epidermidis , Escherichia coli ) were evaluated quantitatively. The filtration efficiency of the tested filter ranged from 95% to 99% depending on the deposition time, and the bactericidal performance demonstrated efficiencies of more than 98% against both tested bacterial bioaerosols when the NSS deposition ratio was more than 500 μg/cm 2 . The experimental results indicated that the NSS-coated filters have the potential to be used as effective antimicrobial air filters for decreasing environmental exposure to microbial contaminants.

Keywords: bioaerosol; airborne bacteria; filter; natural salt; microbial contaminants; antimicrobial filter (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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