Merging Science & Engineering for Energy-Efficient Gas Separations

Dr. William J. Koros, School of Chemical & Biomolecular Engineering, Georgia Institute of Technology
Shemilt Lectureship 2017

23 March 2017 at 10:30

Location: BSB B136

Large scale separation and purification processes transform low value resources into more useful fuels, basic chemicals, food and clean water; however, they also consume a great deal of energy.  Growing global population, increased competition for natural resources and the desire for higher worldwide standards of living will intensify demands upon such processes.  These trends will place a heavy burden on available energy resources and lead to large increases in carbon dioxide emissions under a “business as usual” scenario.  Advanced membrane and sorbent approaches that minimize energy intensive phase change-driven separations can allow as much as an order of magnitude reduction in energy intensity per unit of product purified.  While already used for water purification, more efficient approaches such as reverse osmosis cannot yet be used widely, due to a lack of advanced materials suitable for use with non-aqueous feeds.   Recent developments in membrane and sorbent materials now appear likely to extend the low energy intensity separation revolution beyond water to include the full spectrum of large scale feeds.  Crosslinked glassy polymers, polymer-selective nanoparticle hybrids and carbon molecular sieve (CMS) materials cover different areas in this new separation landscape.  This seminar will discuss examples of these new materials, devices based on them as well as their manufacturing and the savings they enable.  

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