Application of corona discharge-generated air ions for filtration of aerosolized virus and inactivation of filtered virus

Junho Hyun, Sang Gu Lee, Jungho Hwang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The effect of corona discharge-generated air ions on the filtration of aerosolized bacteriophage MS2 was studied. A carbon-fiber ionizer was installed upstream of a medium-efficiency air filter to generate air ions, which were used to charge the virus aerosols and increase their filtration efficiency. After the virus aerosols were captured by the filter for a certain time interval, they were exposed to a newly incoming air ion flow. Captured virus particles were detached from the filter by sonication, and their antiviral efficiency due to air ions was calculated by counting the plaque-forming units. The antiviral efficiency increased with ion exposure time and ion concentration. When the concentration of positive air ions was 107 ions/cm3, the antiviral efficiencies were 46.1, 78.8, and 83.7% with exposure times of 15, 30, and 45 min, respectively. When the ionizer was operated in a bipolar mode, the number concentrations of positive and negative ions were 6.6×106 and 3.4×106 ions/cm3, respectively, and the antiviral efficiencies were 64.3, 89.1, and 97.4% with exposure times of 15, 30, and 45 min, respectively. As a quantitative parameter for the performance evaluation of air ions, the susceptibility constant of bacteriophage MS2 to positive, negative, bipolar air ions was calculated as 5.5×10−3, 5.4×10−3 and 9.5×10−3, respectively. These susceptibility constants showed bipolar ion treatment was more effective about 1.7 times than unipolar ion treatment.

Original languageEnglish
Pages (from-to)31-40
Number of pages10
JournalJournal of Aerosol Science
Volume107
DOIs
Publication statusPublished - 2017 May 1

Fingerprint

Viruses
Discharge (fluid mechanics)
corona
virus
Ions
ion
air
Air
Antiviral Agents
Bacteriophages
bacteriophage
Aerosols
filter
Air filters
aerosol
Sonication
virus particle
Carbon fibers
Negative ions
Positive ions

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Materials Science(all)
  • Pollution

Cite this

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title = "Application of corona discharge-generated air ions for filtration of aerosolized virus and inactivation of filtered virus",
abstract = "The effect of corona discharge-generated air ions on the filtration of aerosolized bacteriophage MS2 was studied. A carbon-fiber ionizer was installed upstream of a medium-efficiency air filter to generate air ions, which were used to charge the virus aerosols and increase their filtration efficiency. After the virus aerosols were captured by the filter for a certain time interval, they were exposed to a newly incoming air ion flow. Captured virus particles were detached from the filter by sonication, and their antiviral efficiency due to air ions was calculated by counting the plaque-forming units. The antiviral efficiency increased with ion exposure time and ion concentration. When the concentration of positive air ions was 107 ions/cm3, the antiviral efficiencies were 46.1, 78.8, and 83.7{\%} with exposure times of 15, 30, and 45 min, respectively. When the ionizer was operated in a bipolar mode, the number concentrations of positive and negative ions were 6.6×106 and 3.4×106 ions/cm3, respectively, and the antiviral efficiencies were 64.3, 89.1, and 97.4{\%} with exposure times of 15, 30, and 45 min, respectively. As a quantitative parameter for the performance evaluation of air ions, the susceptibility constant of bacteriophage MS2 to positive, negative, bipolar air ions was calculated as 5.5×10−3, 5.4×10−3 and 9.5×10−3, respectively. These susceptibility constants showed bipolar ion treatment was more effective about 1.7 times than unipolar ion treatment.",
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Application of corona discharge-generated air ions for filtration of aerosolized virus and inactivation of filtered virus. / Hyun, Junho; Lee, Sang Gu; Hwang, Jungho.

In: Journal of Aerosol Science, Vol. 107, 01.05.2017, p. 31-40.

Research output: Contribution to journalArticle

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