Levich Institute Seminar Announcement, 02/07/2006

Tuesday, 02/07/2006
2:00 PM
Steinman Hall, Room #312
(Chemical Engineering Conference Room)

Professor Peter Scales
University of Melbourne
Chemical Engineering Department


"Compressional Rheology of Aggregated Particulate Suspensions – Analogies with Shear Rheology"

ABSTRACT


Aggregated particulate networks are common to a range of industrial processes including thickening, filtration and centrifugation. Particulate networks form when the suspension is concentrated and the aggregates form strings. The failure of this network under stress and the subsequent release of fluid, resulting in further network densification, is termed compressional rheology. The measurement of compressional rheology parameters is an emerging science and the links to shear rheology forms a new but important driver for the improvement of many industrial processes. In particular, understanding how shear processes can aid the dynamics of compressional failure and fluid release is a key aim of our work.

BRIEF ACADEMIC/EMPLOYMENT BACKGROUND:
  • PhD 1988 Uni. of Melbourne, Australia (surface and colloid chemistry)
  • ICI Corporate Research, Runcorn, UK, 1988-1991
  • Manager, ARC Special Research Centre, Uni. of Melbourne, 1991-1998
  • Associate Professor, Chemical Engineering, 1999-2002
  • Head of Department, Chemical and Biomolecular Engineering, Uni. of Melbourne, 2002-

CURRENT RESEARCH:

Particle dispersion and suspension stability, suspension electrokinetics, including electroacoustics, shear and compressional rheology of suspensions, dewatering of minerals tailings, water recovery reuse, dewatering of biological particulate networks (aka. Shit), thickening, filtration, centrifugation