Change of Moisture Distribution in Clay Bed During Electroosmotic Dewatering Process

Abstract

An experimental study of electroosinotic dewatering was carried out, using a kneaded clay bed. By investigating the experimental results, the following conclusions were obtained. (1) After a long time, a final moisture distribution is formed in the clay bed where the electric current flows but electroosinotic flow does not occur. (2) The gradient of the final moisture distribution curve increases with increasing voltage applied to the clay bed. (3) The minimum moisture content on the final moisture distribution curve can reach a lower value than either experimental data published in the literature or the critical moisture content for dewatering shrinkage of the clay bed.