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Submicron and Nanoparticulate Matter Removal by HEPA-Rated Media Filters and Packed Beds of Granular MaterialsContaminants generated aboard crewed spacecraft by diverse sources consist of both gaseous chemical contaminants and particulate matter. Both HEPA media filters and packed beds of granular material, such as activated carbon, which are both commonly employed for cabin atmosphere purification purposes have efficacy for removing nanoparticulate contaminants from the cabin atmosphere. The phenomena associated with particulate matter removal by HEPA media filters and packed beds of granular material are reviewed relative to their efficacy for removing fine (less than 2.5 micrometers) and ultrafine (less than 0.01 micrometers) sized particulate matter. Considerations are discussed for using these methods in an appropriate configuration to provide the most effective performance for a broad range of particle sizes including nanoparticulates.
Document ID
Acquisition Source
Marshall Space Flight Center
Document Type
Technical Memorandum (TM)
Perry, J. L.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Agui, J. H.
(NASA Glenn Research Center Cleveland, OH, United States)
Vijayakimar, R
(Aerfil Liverpool, NY, United States)
Date Acquired
June 5, 2017
Publication Date
May 1, 2016
Subject Category
Man/System Technology And Life Support
Numerical Analysis
Report/Patent Number
Distribution Limits
Public Use Permitted.
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