Record Display for the EPA National Library Catalog


Main Title Fine particle charging development /
Author Pontius, D. H., ; Felix, L. G. ; McDonald, J. R. ; Smith., W. B.
Other Authors
Author Title of a Work
Pontius, D. H.
CORP Author Southern Research Inst., Birmingham, Ala.;Industrial Environmental Research Lab., Research Triangle Park, N.C.
Publisher Environmental Protection Agency, Office of Research and Development ; For sale by the National Technical Information Service,
Year Published 1977
Report Number EPA-600/2-77-173
Stock Number PB-271 727
OCLC Number 03796508
ISBN pbk.
Subjects Electrostatics
Additional Subjects Fines ; Air pollution control equipment ; Electrostatic precipitators ; Particles ; Electrostatics ; Combustion products ; Industrial wastes ; Ions ; Electric fields ; Performance evaluation ; Design criteria ; Cost analysis ; Pilot plants ; Mathematical models ; Aerosols ; Feasibility ; Changing ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-600/2-77-173 Research Triangle Park Library/RTP, NC 04/18/2003
ELBD ARCHIVE EPA 600-2-77-173 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-2-77-173 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-271 727 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xvi, 224 pages : illustrations ; 28 cm.
The report gives results of theoretical and experimental investigations into the changing of fine particles by unipolar ions in an electric field, and evaluation of a specially designed small pilot-scale (600-1000 acfm) precharging device. Following an extensive review of the literature, a new theory was developed, predicting statistically the average charge per particle in a large collection of particles. The electrical mobility of particles charged under controlled conditions of ion density, charging time, electric field strength, and ion polarity was measured to determine the average charge per particle for comparison with the theory. Agreement between experimental results and theory was generally within 20%. The precharger evaluation, based on direct particle charge measurements and the effects on performance of a pilot-scale electrostatic precipitator of conventional design located downstream from the precharger, indicated that effective particle charging was achieved in accordance with the theoretical predictions. Particle migration velocities in the precipitator, with the precharger on, were up to 60% greater than with the precharger off.
Contract 68-02-1490, ROAP 21ADL-036, Program element 1AB012, sponsored by Industrial Environmental Research Laboratory, Office of Energy, Minerals, and Industry, Research Triangle Park, N.C. Issued Aug. 1977. Includes bibliographical references.