Table of Contents
Magnetic and Electrical Separation
Volume 4, Issue 1, Pages 1-17

Electric Diffusion of Mono and Polydisperse Polarizable Particles in an Electric Field

Departments of Civil and Chemical Engineering, Technion IIT, Haifa 32000, Israel

Received 31 December 1991

Copyright © 1992 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Thermodynamic analysis of nonuniform dispersion of electrically polarizable particles in electric fields is presented. Extensive and intensive energy formulations are used to derive forces that generate electric diffusion and the corresponding diffusion coefficients. Results obtained for monodisperse systems are extended to polydisperse particle mixtures, and transformation of diffusion coefficient from the fluid to the dispersion frame of reference is provided. Finally, differential diffusion of polydisperse particles can constitute the basis for their separation in electric fields.