ORGANOMINERAL SORBENTS BASED ON CLINOPTILOLITE-CONTAINING TUFFS .2. STUDY OF ION-EXCHANGE AND TECHNOLOGICAL PROPERTIES OF ORGANOMINERAL SORBENTS

The anion-exchange properties of a new organomineral sorbent obtained by modification of clinoptilolite-containing tuffs by polyhexamethylen eguanidine have been studied after different periods of storage (time after synthesis) and numbers of ''sorption-regeneration'' cycles. The sorbent can be used as a cation- and an anion-exchanger simultaneously . Selectivity coefficients (exchange constants) for F-, SO42-, and HPO 42- ions vs. Cl- ions on modified clinoptilolite-containing tuffs have been determined. The modification improves the mechanical properties of clinoptilolite tuffs.