Speaker
Description
Membrane filtration is known to depend on how the fluid and membrane surface are brought into contact. In this talk, I discuss our work on a circular cross-flow filtration system, using a combination of mathematical modelling and in-house experiments. While the so-called ‘coupled free and porous flow’ approaches are utilised for modelling the hydrodynamics of the fluid-membrane ‘contacts’ in the system, the lab experiments investigated the roles of several typical parameters (e.g., transmembrane pressure, solute feed concentration, pH, ionic strength and shear stresses applied on the membrane surfaces) on the permeate flux for a range of solutes (e.g., organic matter and microorganisms). A comparison of the mass transfer coefficients obtained for this system showed that it was significantly higher than others, e.g., stirred dead-end systems at similar operating conditions. I also use the talk to discuss our interests in polymeric membrane preparation and to demonstrate how these have been utilised in our work on circular cross-flow systems.
| Country | United Kingdom |
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