Shell core ion exchange resins - Purolite

Table 19: Bead size uniformityShell/Radius Ratio Uniformity Coefficient0.00 copolymer1.370.481.160.501.150.641.281.00 std. resin1.533. RESULTSThe theses proposed in the Introduction are substantiated individually with specificexamples, all commercially related. Generally, ion exchange resin made with deeplyfunctionalized shells and impervious cores is shown to operate more efficiently, particularlyin regeneration efficiency and subsequent effluent quality. This concept is broadened toinclude SAC, WAC, and SBA ion exchange resins and suggests it can be broadened furtherto all absorbents. Further, the resin beads have superior stability in normal ion exchangeresin cycling.AcknowledgementI must recognize all the organizations that are using these SST resins and tookthe effort to document the results herein.REFERENCES1. Fries William, Superior performance of ion-exchange resins with short, optimaldiffusion paths – SDP resins, Reactive Polymers, 19, 97-104 (1993).2. Fries William, Ion exchange resins, European Patent EP0361685, 01/19/19943. Downey Don, SST-60 Shallow Shell Strong Acid Cation Resins, Purolite.com.4. Heller Terence, Iron Removal with SST Ion Exchange Resins, Purolite.com.5. Boodoo Francis, Enhancing RO Permeate Recoveries with Cyclic Ion Exchange, IWCSan Antonio, TX, IWC 10-56.6. Downey Don, Use of Seawater to Regenerate PUROLITE R SST-80 Shallow ShellSAC Resin, IWC 11-06.7. Downey Don, Producing High-Purity Water with Shallow-Shell Resins, UltrapureWater, 18(6), 20, 22-24,26 (July/August 2001).8. Anon, Demineralization Cost Reduction News, Reported independently byDemineralization Cost Reduction News, Div. Indumark, New York, NY, February2009.9. Case History, SST-60 Shallow Shell Strong Acid Cation Resin.13