428773 Size-Exclusion Simulated Moving Bed for Separating Organophosphorous Flame Retardants from a Polymer

Thursday, November 12, 2015: 8:50 AM
255D (Salt Palace Convention Center)
George S. Weeden Jr.1, Lei Ling2, Nicholas Soepriatna2 and Nien-Hwa, Linda Wang1, (1)Chemical Engineering, Purdue University, West Lafayette, IN, (2)School of Chemical Engineering, Purdue University, West Lafayette, IN

Over 500,000 tonnes of flame retardants in electronic wastes are consigned to landfills each year. A room-temperature, size-exclusion simulated moving bed (SEC-SMB) was developed using the Standing Wave Design method. High purity (>99%) flame retardants were recovered with high yield (>99%) from a waste. The cost of such a process was estimated to be less than 10% of the purchase cost of the flame retardants. The SEC-SMB is over an order of magnitude more efficient than conventional SEC processes. Fast startup methods were developed to reduce the SMB start-up time by more than 18 fold. SEC-SMB can be an economical method for separating small molecules from polymers in wastes.

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See more of this Session: Chromatographic Separations and SMB
See more of this Group/Topical: Separations Division