Granular filtration of polydispersed aerosols were studied experimenta
lly. The objectives of the study were to investigate the effect of dep
osited particle size on the increase of the unit collector efficiency
and to quantify the increase for predicting filter performance. An alg
orithm for determining the effluent concentration histories of polydis
persed aerosol filtration was presented. Together with the correlation
s developed in this work, prediction of filter performance can be made
readily. Good agreements between experiments and predictions based on
the correlations established in this work were observed.