Document Detail

Aerosol penetration properties of an electret filter with submicron aerosols with various operating factors.
MedLine Citation:
PMID:  17129948     Owner:  NLM     Status:  MEDLINE    
This study was undertaken to determine the effects of using an electret filter on aerosol penetration. Various factors, including particle size (0.05 to 0.5 micro m), aerosol charge state (neutral and single charge), face velocity (0.1, 0.3, 0.5 and 1.0 m/s), and relative humidity (RH 30% and RH 70%), were examined to assess their effects on aerosol collection characteristics. The results presented here demonstrate that the electric fields of the electret and discharged filter were -1.53 x 104 and -1.3 x 102 (V/m). The penetration through the electret filter with singly charged aerosol and neutral aerosol ranged from 0.4% to 13% and 14% to 29%, respectively. According to these results, the coulombic capture force was dominant for the smaller aerosol and the dielectrophoretic capture mechanism was considered important for the larger aerosol. The level of penetration through the electret filter increased with increasing face velocity and relative humidity. The temperature did not affect the penetration through the electret. Furthermore, from the regression analysis conducted during the operating conditions of this work, the aerosol charge was shown to exert the greatest influence on aerosol penetration.
Shinhao Yang; Whei-May G Lee; Hsiao-Lin Huang; Yi-Chin Huang; Chin-Hsiang Luo; Chih-Cheng Wu; Kuo-Pin Yu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering     Volume:  42     ISSN:  1093-4529     ISO Abbreviation:  J Environ Sci Health A Tox Hazard Subst Environ Eng     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2006-11-28     Completed Date:  2007-05-15     Revised Date:  2009-08-14    
Medline Journal Info:
Nlm Unique ID:  9812551     Medline TA:  J Environ Sci Health A Tox Hazard Subst Environ Eng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  51-7     Citation Subset:  IM    
Department of Leisure and Recreation Management, Toko University, Chia Yi County, Taiwan, ROC.
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MeSH Terms
Aerosols / adverse effects,  chemistry*
Air Pollutants / isolation & purification*
Air Pollution / prevention & control*
Filtration / instrumentation*
Static Electricity
Reg. No./Substance:
0/Aerosols; 0/Air Pollutants

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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