title: Filtration of deformable emulsion droplets.
abstract: Oil-in-water (o/w) emulsions of different droplet size were filtered on membranes of various pore sizes to investigate the growth and behaviour of o/w filter cakes. The cake desorptivity S and the filter membrane resistance R were measured at various filtration pressures P. The variation of S with P shows that filter cake oil droplets of radius a are effectively rigid for P << gamma/a and fully deformable for P >> gamma/a, where gamma is the oil-water interfacial tension. For the largest P, when S became P-independent, the filter cake remained water-permeable as expected from theory.
authors.affiliation: BP Institute and the Department of Chemistry, University of Cambridge, Madingley Road, Cambridge, UK.
authors.forename: T F
authors.initials: TF
authors.lastname: Headen
authors.forename: S M
authors.initials: SM
authors.lastname: Clarke
authors.forename: A
authors.initials: A
authors.lastname: Perdigon
authors.forename: G H
authors.initials: GH
authors.lastname: Meeten
authors.forename: J D
authors.initials: JD
authors.lastname: Sherwood
authors.forename: M
authors.initials: M
authors.lastname: Aston