The charging and stability of electret filters

Ali Kilic*, Stephen Russell, Eunkyoung Shim, Behnam Pourdeyhimi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

33 Citations (Scopus)


Having a long history in aerosol filtration technologies, electret filters are one of the basic solutions to provide high particle capture efficiency at a low pressure drop and energy expense. However, their reliability is still an ongoing issue from the aspects of high efficiency and stability. In this chapter the theory behind electret mechanism, charging of the fibrous materials, their discharging and stability were reviewed in detail. Physics behind the widely used electret filter charging/polarization mechanisms were also discussed.

Original languageEnglish
Title of host publicationFibrous Filter Media
PublisherElsevier Inc.
Number of pages27
ISBN (Electronic)9780081005828
ISBN (Print)9780081005736
Publication statusPublished - 1 Jan 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd. All rights reserved.


  • Charging
  • Electret
  • Electrostatic filtration
  • Stability


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