Constant pressure filtration: The effect of a filter membrane
1982; Elsevier BV; Volume: 37; Issue: 5 Linguagem: Inglês
10.1016/0009-2509(82)85029-x
ISSN1873-4405
AutoresD. E. Smiles, P.A.C. Raats, J. H. Knight,
Tópico(s)Geotechnical Engineering and Soil Mechanics
ResumoAbstract Theory developed to describe water movement and volume change in soils may be applied to many industrially important particulate liquid suspensions. The theory is used here to predict the important aspects of constant-pressure filtration where the filter membrane significantly impedes the escape of the liquid. The method requires measured liquid content—liquid potential and liquid content—liquid diffusivity relations of the suspensions, and the conductance of the filter membrane. Illustrative calculations for saturated bentonite slurry are presented. These calculations predict the evolution of the liquid and solid profiles in both material and physical space, and the cumulative volume of liquid expelled, as a function of time during filtration. Experiments using bentonite at two different pressures, and with a range of values of membrane conductance, confirm integral predictions of the model.
Referência(s)