(372k) Impact of Wafer Chemistry on Electrodeionization Removal and Selectivity
AIChE Annual Meeting
Tuesday, November 15, 2022 - 3:30pm to 5:00pm
Previous studies have shown that material modification with various crown ether molecules has resulted in increased ionic selectivity of different ionic species based on the size of the crown molecules present in the system. For instance, 15-crown-5 ethers have been shown to complex with sodium. For this study, a multi-ion solution was run on a 1-wafer EDI using wafers produced with different cation and anion exchange beads to better understand the impact of different wafer chemistries on the ion removal process. Included in the cation exchange beads were those that had been modified with crown ethers.
The different combinations of beads had a high impact on ion removal, and the modifications of cation exchange beads resulted in an increase in the wafersâ selectivity by at least 10%.