Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/43825
Título : Electrostatic precipitation of ultrafine particles enhanced by simultaneous diffusional deposition on wire screens.
Autor : Alonso Gámez, Manuel, Alguacil, Francisco José
Palabras clave : Fiber filter
Electrostatic precipitator
Flue gas dust removal
Physicochemical purification
Nanoparticle
Submicron particle
Ultrafine particle
Aerosols
Flue gas purification
Fecha de publicación : 2002
Editor: Air & Waste Management Association
Resumen: A laboratory-scale electrostatic precipitator has been designed and constructed in which the grounded collector plate has been substituted by a set of wire screens placed perpendicularly to the gas flow. Particles are deposited onto the screens by two mechanisms-electrostatic deposition and diffusional deposition-which act simultaneously. On the one hand, electrostatic deposition is effective for relatively large particles, but it is quite ineffective for the smallest ones because their charging probability in the corona field is too low. On the other hand, the diffusional collection efficiency of particles on fibers is high for small particles but low for the larger ones. Therefore, the simultaneous diffusional-electrostatic precipitation may become a useful technique for efficient filtration of particles below 0.1 μm. A preliminary experimental evaluation of this filtering device has shown that submicrometer particles with diameters down to a few nanometers can be collected with number efficiencies greater than 99%.
Versión del editor: http://secure.awma.org/journal/Archives.aspx
URI : http://hdl.handle.net/10261/43825
ISSN: 1096-2247
Citación : Journal of the Air & Waste Management Association 52 (11) : 1342-1347 (2002)
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