FUNDAMENTAL STUDY OF ELECTROOSMOTIC FILTRATION

Abstract

In this study, the fundamental characteristics of a particle bed with electroosmosis were investigated. Especially, the effects of the strength of electric field and the porosity of particle bed on the flow rate of electroosmosis, qE, and the correlation between qE and the electric power were theoretically analysed. These relations were experimentally confirmed. The particle beds used in the experiments were composed of particles of silica, calcite, calcium carbonate, and clay, respectively. The results showed that qE was proportional to the strength of electric field, the square root of electric power, and the porosity of particle bed in the range of porosity less than about 0.4.