TARLETON, E.S., HOLDICH, R.G. and WILLMER, S.A., 1995. Understanding filter cake formation through electrical impedance measurements. Proceedings, IChemE Research Event, Edinburgh, January, pp.883-885.
An electrical impedance tomography technique for determining the solids concentration in
solid/liquid mixtures has been used to analyse cake formation during the pressure leaf filtration of
aqueous based mineral suspensions. The experimental data are interpreted through so-called
‘modern filtration theory’ which serves to highlight some of the difficulties that currently exist in the
areas of both modelling and scale-up in solid/liquid separation.