Shell core ion exchange resins - Purolite

0.067Water Quality(cond., μS cm -1 )Table 10: High quality water productionStd. Mixed-BedCapacity,(meq mL -1 )5010.20.10.150.660.580.540.38Mixed-Bed with S/CSAC Capacity,(meq mL -1 )0.330.590.450.440.402.4 Sugar ChromatographyA lab study was made of the commercial process of separating glucose and fructoseto produce High Fructose Corn Syrup using SAC resin in the calcium form. Acceptedindustry test methods were used. The first test was hot water rinse-out rate of resinsaturated with 50% dextrose. The second was actual column chromatographic separationefficiency of glucose and fructose in a mixed stream.In the former (Table 11) the time required to reach a specific low glucose level isless as the S/R ratio of the resin decreased indicating faster diffusion kinetics.In the latter (Table 12) the separation efficiency of the shell/core resin isuninfluenced by the uniformity of the resin’s bead size (higher UC = less uniform bead sizedistribution) and whether the beads are stratified by size or remain randomly mixed. Beadstratification is known to harm chromatographic performance but not in the case of shellcoreresins.Table 11: Glucose rinse-out rate (minutes to glucose level)Shell/Radius Ratio 10% 5% 3% 1%1.0 std.0.720.391258576136968414610595174150145Shell/RadiusRatio1.0 std.1.00.750.75Table 12: Glucose-Fructose separationMean Size Uniformity Separation Indexmicrons Coefficient mixed bed4571.1544571.5604331.1604331.560Separation Indexstratified bed5552606010