Particle Capture by Brownian Diffusion and Interception

In the case of Brownian diffusion and interception, particle capture is enhanced by London attractive forces and reduced by electrostatic double layer repulsive forces. [Pg.289]

It is widely accepted that the fibres in the filter fabric capture the dust particles by one of several mechanisms, these being identified as inertial impaction, interception,diffusion (Brownian motion) and electrostatic forces (see Rg. 7.1). Inertial impaction occurs when particles are of sufficient mass and bulk as to leave the gas stream and make a direct impact on a fibre in the filter. [Pg.225]