Macroreticular resins, physical

PHYSICAL PROPERTIES OF VARIOUS MACRORETICULAR RESINS Audjerlyst- Amberlyst- Auiberlyst- Aa erlyst- Amberlyst- Aniberlite-... 

Removal of Strontium-90 from Basin Water in a Plant-Scale Column. Amberlite-200 was selected for use in the plant-scale ion-exchange column because (a) a large volume was processed (1200 column volumes) before 1% breakthrough occurred, (b) a reasonably large volume was obtained before 50% breakthrough (a measure of capacity) occurred, (c) it is a macroreticular resin that is resistant to physical degradation, and thus provides high flow rates, and (d) it is readily available at a reasonable cost. 

In contrast to the above resins, the chelating resin Amberlite IRC-718 is based upon a macroreticular matrix. It is claimed to exhibit superior physical durability and adsorption kinetics when compared to chelating resins derived from gel polymers and should also be superior for use in non-aqueous solvent systems. 

Extensive studies in the laboratory and in the field verified the excellent boron selectivity of this ion-exchange resin however, some serious deficiencies in kinetics and physical stability were encountered. More recently an analog of this product, Amberlite XE-243 (Amberlite XE-243 is now commercially available under the designation Amberlite IRA-943), based upon a macroreticular styrene-divinylbenzene, was developed which overcame these deficiencies. The difference between the two structures is only physical. The macroreticular structure of the new boron-selective ion exchanger is similar to that of other macroreticular ion-exchange resins that have been previously described (2, 3). 

---