Publication Date:
2014-10-07
Description:
A new mathematical model of the collision probability between bubbles and non-spherical particles is proposed. In this model it is assumed that the characteristic size of the particle is much smaller than the bubble radius; the particle density is close to the density of the flotation medium and the particle moves along a streamline flowing around the floating bubble (so-called inertialess flotation). So, the stochastic orientation of the particle with respect to the bubble surface was considered. On the basis of this model, the analytical expressions of the collision probability for rod-like and disk-like particles in the Stokes and Levich hydrodynamic regimes were obtained. The obtained results were compared with previous theories and experimental data. For a particle suspended in an aqueous medium to be captured, the rising bubble must first collide with this particle. A new mathematical model of the collision probability between bubbles and non-spherical particles is proposed, considering the stochastic orientation of the particles with respect to the bubbles surface. The results are compared with previous theories and experimental data.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
