Physicochemical influences on electrohydrodynamic transport in compressible packed beds of colloidal boehmite particles

Details Physicochemical influences on electrohydrodynamic transport in compressible packed beds of colloidal boehmite particles Physicochemical influences on electrohydrodynamic transport in compressible packed beds of colloidal boehmite particles

2007-09-25

arxiv.org/abs/0709.4003v1

Physics

Condensed Matter

Soft Condensed Matter

13 pages including 7 figures, accepted by Journal of Colloid and Interface Science

Scientific paper

Production and processing of colloidal particles require a deeper understanding of surface charge of particles and interaction of mass and charge transport in packed beds. The assessment of fundamental parameters is rather complex due to the additional influence of the particle charge on the structure of a packed bed. The combination of different measurement techniques (streaming potential and electroosmosis) allows for separating the effects, based on the postulation of a new method to quantify the ratio of surface conductance to liquid conductance. The purpose of this paper is to investigate the influence of the pH value and compression on the electrohydrodynamic transport parameters.

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