Invited SpeakersProfile Details

Prof. Sandra Kentish
Prof. Sandra Kentish University of Melbourne, Australia

Biography

​Professor Sandra Kentish is Head of the Department of Chemical and Biomolecular Engineering at the University of Melbourne. Prior to this appointment, she was Deputy Director of the Melbourne Energy Institute for three years. She is a Project Leader within the Peter Cook Centre for Carbon Capture and Research, the Discipline Leader for Membrane Technology within the CRC for Greenhouse Gas Technologies (CO2CRC) and a Theme Leader within the Australian Research Council Dairy Innovation Hub.  She is also an invited Professor at the Centre for Water, Earth and the Environment within the INRS in Canada.  Before becoming an academic she worked for nine years in industry, with companies including Exxon Chemicals, Kodak Australasia and Kimberly Clark.

All sessions by Prof. Sandra Kentish

  • Day 2Tuesday, February 21st
Session 4: Advanced Membranes/Processes II
2:30 pm

The Use of Layer by Layer Approaches in Membrane Manufacture

This presentation will describe how layer by layer (LBL) technology can be used to prepare ultrathin films suitable for use within membrane systems. A simple polyethylene glycol film constructed using a LBL approach can be used to reduce biofouling when added to standard reverse osmosis membranes. Alternatively LBL structures can be used to replace the polyamide structure completely with an alternate chemistry. We have investigated combinations of the polyanions polystyrene sulfonate (PSS) or sulfonated polysulfone with the polycation poly(allylamine)hydrochloride for this purpose. The resulting membranes have achieved NaCl rejections of over 97% by crosslinking with glutaraldehyde. Importantly, these structures are far more resilient to attack by chlorine, meaning that they have strong potential for systems where biofouling is a concern. We have also used the same approach to secure the carbonic anhydrase enzyme to the surface of a porous hollow fibre membrane, for use within a membrane contactor. Immobilisation of the membrane on the surface of the hollow fibre leads to enhanced mass transfer and reduced pore wetting in carbon capture applications.

Level 0, between bld. 4 and 5 14:30 - 15:00 Details