Filtration of submicron aerosol particles using a carbon fiber ionizer-assisted electret filter

Kwang Chul Noh, Jung Hoon Lee, Chul Kim, Sunghwan Yi, Jungho Hwang, Young Hun Yoon

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The effects of a carbon fiber ionizer on the collection efficiency of an electret filter for residential house ventilation were investigated with varying the face velocity, the number of ionizers, and the polarity of the ionizer. A Flimmer filter, which was made by a Swedish company, was used as the electret filter. The air ion concentration upstream of the filter gradually increased as the velocity increased. Under the same conditions of velocity and the same number of ionizers, the positive ion concentrations were slightly higher than the negative ones. The ion concentration at any location away from the ion source was only slightly affected by the number of ionizers. When ionizers were used in front of the Flimmer filter, the collection efficiencies for submicron particles increased by 10 to 25%. When positive ionizers were used, the collection efficiencies were 10 to 15% higher than with the negative ionizers. The increase in collection efficiency occurred because most of the generated air ions were captured on the surface of the electret filter fibers, thereby increasing the electrostatic potential inside the electret filter.

Original languageEnglish
Pages (from-to)811-821
Number of pages11
JournalAerosol and Air Quality Research
Volume11
Issue number7
DOIs
Publication statusPublished - 2011 Dec 1

Fingerprint

Electrets
Aerosols
Particles (particulate matter)
Carbon fibers
aerosol
filter
Ions
ion
Ion sources
Air
Ventilation
Electrostatics
Positive ions
air
carbon fiber
Fibers
ventilation
Industry

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Pollution

Cite this

Noh, Kwang Chul ; Lee, Jung Hoon ; Kim, Chul ; Yi, Sunghwan ; Hwang, Jungho ; Yoon, Young Hun. / Filtration of submicron aerosol particles using a carbon fiber ionizer-assisted electret filter. In: Aerosol and Air Quality Research. 2011 ; Vol. 11, No. 7. pp. 811-821.
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Filtration of submicron aerosol particles using a carbon fiber ionizer-assisted electret filter. / Noh, Kwang Chul; Lee, Jung Hoon; Kim, Chul; Yi, Sunghwan; Hwang, Jungho; Yoon, Young Hun.

In: Aerosol and Air Quality Research, Vol. 11, No. 7, 01.12.2011, p. 811-821.

Research output: Contribution to journalArticle

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