CPC B01J 49/00 (2013.01) [B01J 20/04 (2013.01); B01J 20/28016 (2013.01); B01J 39/09 (2017.01); B09B 3/00 (2013.01)] | 19 Claims |
1. A method for recycling waste ion exchange materials comprising a first alkali metal salt and a second alkali metal salt, the method comprising:
reducing the size of the waste ion exchange materials to produce a plurality of waste ion exchange particles having particle sizes from 0.10 mm to 5.0 mm; and
regenerating the plurality of waste ion exchange particles to produce a plurality of regenerated ion exchange particles having a concentration of the first alkali metal salt greater than a concentration of the first alkali metal salt in the waste ion exchange materials,
wherein regenerating the plurality of waste ion exchange particles comprises:
contacting the plurality of waste ion exchange particles with an aqueous solution saturated with the first alkali metal salt to form a regenerated ion exchange slurry; and
separating the regenerated ion exchange slurry to produce a recycled aqueous solution and the plurality of regenerated ion exchange particles.
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