Colloid perikinetic aggregation

Figure 13.3 Basic data needed to calculate capture efficiency in perikinetic aggregation. As an example, part of the colloidal interaction potential V as a function of interparticle distance h is given it is calculated from DLVO theory [Eqs. (12.1) and (12.7)] for d=0.5pm, A =. 25kBT, i o=15mV, and 7=10mM (1/ K = 3nm). y is the integrand of Eq. (13.5), y that of Eq. (13.7) note the different scales.

E. Barouch, Heterocoagulation. VI. Interactions of monodispersed hydrous aluminum oxide sol with polystyrene latex, /. Colloid Interf. Sci. 1980, 76,319-329 (c) K. Csoban, E. PefFerkorn, Perikinetic aggregation induced by chromium hydrolytic polymer and sol,/. Colloid Interf. Sci. 1998, 205,516-527. 

TJhe aggregation of particles in a colloidal dispersion proceeds in two distinct reaction steps. Particle transport leads to collisions between suspended colloids, and particle destabilization causes permanent contact between particles upon collision. Consequently, the rate of agglomeration is the product of the collision frequency as determined by conditions of the transport and the collision efficiency factor, the fraction of collisions leading to permanent contact, which is determined by conditions of the destabilization step (2). Particle transport occurs either by Brownian motion (perikinetic) or because of velocity gradients in the suspending medium (orthokinetic). Transport is characterized by physical parame-... 

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