Record Display for the EPA National Library Catalog

RECORD NUMBER: 225 OF 261

OLS Field Name OLS Field Data
Main Title Studies of dust cake formation and structure in fabric filtration /
Author Miller, Bernard ; Lamb, George ; Costanza, Peter ; O'Meara, Dan ; Dunbar., Janet ;
Other Authors
Author Title of a Work
Miller, Bernard,
CORP Author Textile Research Inst., Princeton, N.J.;Industrial Environmental Research Lab., Research Triangle Park, N.C.
Publisher Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1978
Report Number EPA-600/7-78-095; EPA-R-804926
Stock Number PB-283 179
OCLC Number 04352077
ISBN pbk.
Subjects Filter cloth. ; Dust control.
Additional Subjects Air pollution control ; Dust filters ; Caking ; Air filters ; Particles ; Electric fields ; Fabrics ; Filtration ; Performance evaluation ; Technology ; Revisions ; Design criteria ; Fabric filters
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101DH75.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 600-7-78-095 Headquarters Library/Washington,DC 01/15/2014
EKAM  EPA-600/7-78-095 Region 4 Library/Atlanta,GA 07/08/1994
EKBD  EPA-600/7-78-095 Research Triangle Park Library/RTP, NC 12/05/2003
ESAD  EPA 600-7-78-095 Region 10 Library/Seattle,WA 10/24/2017
NTIS  PB-283 179 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation vii, 39 pages : illustrations ; 28 cm.
Abstract
The report gives results of a study to identify cake characteristics affecting performance and, in turn, to relate the production of desirable cake properties to fabric structure and filtration conditions. (Earlier studies showed that differences in filtration performance produced by certain modifications of nonwoven filter fabrics are due largely to the development of different dust cake structures.) The amount of dust capture as a function of depth into the filter was measured using nonwovens formed in layers. Comparing trilobal cross-section filters fibers with round fibers, the largest advantages in capture efficiency due to trilobal fibers are in the upstream layers where the largest amounts of dust accumulate. Preliminary studies with composite layered filters also show that filtration performance is dominated by the upstream layer. Dust cake structure is influenced by fiber geometry, by the charge on the particles, and by any electric field on the filter. Theoretical calculations of single-fiber collection efficiencies support the experimental findings that capture of both charged and uncharged particles on fibers of any cross-sectional shape is more likely if an electric field is imposed perpendicular rather than parallel to the flow. As for fiber cross-sectional shape, capture should improve with increasing lobe number and depth.
Notes
Prepared by Textile Research Institute, Princeton, N.Y. under Grant no. R804926, program element no. EHE624. Issued June 1978. Includes bibliographical references.