WAKEMAN, R.J. and TARLETON, E.S., 1989. The roles of particle and liquid properties in expression - an experimental study. Proceedings, Filtech Conference 1989, Karlsruhe, pp.227-237.
The objectives of this work were to study effects of particle characteristics on the kinetics of the
compression, consolidation and drainage processes. Work has been carried out on a range of
solid/liquid mixtures; in each case the mixture was characterised in respect of its particle size and
shape, the zeta potential associated with the particle and the ionic strength of its solution
environment, and the resulting aggregation of the particulate phase. Expression experiments were
carried out in a specially designed piston press and in a scaled-down version of an industrial
horizontal tube press. Subsidiary experiments included numerous jar sedimentation tests and a
limited number of filtration tests. The data presented highlight the important experimental
parameters and serves to illustrate those factors which should be considered by the process
engineer when selecting/designing separation equipment.