Discrepancy in Cake Characteristic Measurement: Compression-Permeability Cell

This paper reviews the results of two sets of compression-permeability cell (C-P cell) experiments, with cationic polyelectrolyte flocculated kaolin slurry as the common testing material. The two cells have different geometry and sidewalls construction materials. The sidewall friction could affect the percentage axial stress drop and the measured porosity across the cake, and also the specific resistance to filtration of the cake.