Experimental study on the filtration efficiency of activated carbons for 3-30 nm particles

Changhyuk Kim, David Y Pui

Research output: Contribution to journalLetterpeer-review

17 Scopus citations


The particle filtration efficiency of activated carbons (ACs), which are widely used to remove gaseous contaminants by adsorption, was investigated experimentally with different kinds of nanoparticles from 3 to 30 nm. While the chemical composition of nanoparticles did not change the filtration efficiency, the face velocity did significantly. The single sphere efficiency according to the size of nanoparticles was a function of Peclet number (Pe), and the power-law exponent of Pe was about -0.5. This value was between those of packed-beds (-2/3) and nanofibers (-0.43), which might be caused by the deposition of nanoparticles into pores of the ACs through diffusion.

Original languageEnglish (US)
Pages (from-to)226-229
Number of pages4
StatePublished - Aug 8 2015

Bibliographical note

Funding Information:
The University of Minnesota thanks the support of members of the Center for Filtration Research : 3M Corporation, BASF Corporation, Boeing Company, Cummins Filtration Inc., Donaldson Company Inc., Entegris Inc., Ford Motor Company, H.B. Fuller Company, Mann+Hummel GmbH, MSP Corporation, Samsung Electronics Co., Ltd, Shigematsu Works Co., Ltd, TSI Inc., and W.L. Gore & Associates, Inc., Xinxiang Shengda filtration Technology Co., Ltd and the affiliate member National Institute for Occupational Safety and Health (NIOSH). The financial and technical support is gratefully acknowledged.

Publisher Copyright:
© 2015 Elsevier Ltd.All rights reserved.

Copyright 2018 Elsevier B.V., All rights reserved.


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