Effect of sonic waves on gas filtration by granular beds

The paper describes experiments and theory of acoustically enhanced granular bed filtration of solid particles from gas streams. The experiments have been carried out with acoustic waves of frequencies of 100Hz and 95–110dB sound levels, showing that application of acoustics reduces particle penetra...

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Bibliographic Details
Published inJournal of aerosol science Vol. 57; pp. 125 - 130
Main Authors Moldavsky, L., Gutfinger, C., Oron, A., Fichman, M.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.03.2013
Elsevier
Subjects
Aerosols
Chemistry
Colloidal state and disperse state
Exact sciences and technology
Gas filtration
General and physical chemistry
Granular beds
Particle penetration
Sonic waves
Sonic waves
Particle penetration
Gas filtration
Granular beds
Particle
Filtration
Aerosols
Granular bed
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Summary:The paper describes experiments and theory of acoustically enhanced granular bed filtration of solid particles from gas streams. The experiments have been carried out with acoustic waves of frequencies of 100Hz and 95–110dB sound levels, showing that application of acoustics reduces particle penetration up to 35% relative to filtration without acoustics. Theoretical analysis shows that by increasing the acoustic intensity and decreasing the frequency, the effect of acoustics on filtration efficiency is amplified. ► Experiments on particle deposition in granular-bed filters in the presence of acoustic waves. ► Theory of acoustically enhanced granular bed filtration of solid particles from gas streams. ► Enhancement of filter performance by acoustics.
ISSN:0021-8502
1879-1964
DOI:10.1016/j.jaerosci.2012.10.002