Shota Yamada, Takafumi Seto, Yoshio Otani

  • Department of Chemical and Material Engineering, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan

Received: December 28, 2010
Revised: January 29, 2011
Accepted: December 29, 2016
Download Citation: ||  

  • Download: PDF

Cite this article:
Yamada, S., Seto, T. and Otani, Y. (2011). Influence of Filter Inhomogeneity on Air Filtration of Nanoparticles. Aerosol Air Qual. Res. 11: 155-160.



Thermal rebound of nanoparticles on the surface of fibers is of big concern in collecting nanoparticles. Another factor influencing the collection of nanoparticles is the inhomogeneity of fiber packing. The present work studied the influence of filter inhomogeneity on the collection efficiency of nanoparticles by using wire screens as uniform structure in comparison to real filters. As a result, the single fiber collection efficiencies of nanoparticles through wire screens are in good agreement with those predicted by Kirsch and Fuchs (ηD = 2.7Pe-2/3), but the dependence of real filters on Pe is somewhat smaller than –2/3 and in agreement with (ηD = 0.84Pe-0.43, Wang et al., 2007). The dependence of single fiber collection efficiency on Pe for the real filters is well explained by considering non-uniformly packed filter consisting of two regions of densely packed and loosely packed fibers.

Keywords: Collection efficiency; Diffusional regime; Fiber packing inhomogeneity; Pressure dro

Don't forget to share this article 


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

Latest coronavirus research from Aerosol and Air Quality Research

2018 Impact Factor: 2.735

5-Year Impact Factor: 2.827

SCImago Journal & Country Rank

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal, promotes submissions of high-quality research, and strives to be one of the leading aerosol and air quality open-access journals in the world.