Event Details
Numerical Modelling of Centrifugal Membrane Separation
Presenter: Mr. Jon Pharoah - Department of Mechanical Engineering
Supervisor:
Date: Thu, February 21, 2002
Time: 14:00:00 - 15:00:00
Place: EOW 430
ABSTRACT
ABSTRACT
Membrane separation processes are used in a wide variety of applications including the treatment of waste water, the production of potable water and the concentration and clarification of fruit juices. Membrane processes rely on a semi-permeable membrane which splits a feed stream into a permeate stream that passes through the membrane, and a concentrate stream that does not. While membrane separation is more energy efficient than processes which rely on phase change to effect a separation, they are currently limited by both concentration polarization and by membrane fouling.
Centrifugal Membrane Separation (CMS) is a novel technique proposed both to further enhance the energy efficiency of membrane processes while at the same time improving performance by reducing the negative effects of fouling and concentration polarization. CMS relies on placing the membrane in a centrifuge which is used to develop the process pressure. This has the advantage of inherent energy recovery as well enhanced mixing, and hence increased membrane performance, due to Coriolis acceleration.
The current research is focused on modelling the flow and mass transfer in rotating membrane cartridges with a view to optimizing membrane performance in rotating frames. The study is complementary to a parallel experimental program. Parametric studies are carried out in rectangular, circular and triangular channels as well as in channels with flow obstacles. The complex interplay between secondary flows and mass transfer are analyzed and discussed and some conclusions are drawn on the effectiveness of rotation and various orientations.
FREE AND OPEN TO THE PUBLIC
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For Further Information Please Contact: Jon Pharoah (472-4202)