Filter quality factors of fibrous filters with different fiber diameter

Han Bin Kim, Woo Jin Lee, Seuk Cheun Choi, Ki Bong Lee, Myong Hwa Lee

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Fibrous filters are effective for the removal of ultrafine particles and have been widely used. According to filtration theory, diffusion and interception are the main particle collection mechanisms for removing ultrafine particles, and these are greatly affected by fiber diameter. Particle collection efficiency by diffusion and interception increases as the fiber diameter decreases. Most of the previous studies conducted by researchers have focused on the effect of fiber diameter on filtration performance; however, they used filter media with different physical properties. Therefore, it is important to clearly understand the influence of fiber diameter alone on filtration performance in filters with the same physical properties (e.g., packing density, filter thickness, and fiber weight per unit area). In this study, PVA nanofiber filters with different fiber diameters (100, 201, and 306 nm) were prepared with other physical properties the same, using electrospinning. In addition, the effect of fiber diameter on filtration performance was examined by experimental and theoretical investigation. Filtration performance as determined by pressure drop and particle collection efficiency, increased with decreasing fiber diameter, as expected according to filtration theory. Furthermore, the filter quality factor (representing filtration performance), increased with decreasing fiber diameter.

Original languageEnglish
Pages (from-to)154-166
Number of pages13
JournalAerosol Science and Technology
Issue number2
Publication statusPublished - 2021

Bibliographical note

Funding Information:
This study was financially supported by an internal program of Korea Institute of Industrial Technology (KITECH) and 2019 Research Grant from Kangwon National University.

Publisher Copyright:
© 2020 American Association for Aerosol Research.


  • Jing Wang

ASJC Scopus subject areas

  • Environmental Chemistry
  • General Materials Science
  • Pollution


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