Abstract
Adsorption and spectral methods are employed for complex studying the interaction of organic cations of crystal violet with layered silicates, kaolinite and hydromica, both natural and modified with a cationic surfactant, cetylpyridinium bromide, and a cationic polyelectrolyte, poly(hexamethyleneguanidine hydrochloride). It is shown that, on the surface of silicates modified with long-chain cationic surfactants, the examined sorbate is sorbed via the hydrophobic interaction of its aggregates with the modified surface. In the case of minerals modified with relatively hydrophilic poly(hexamethyleneguanidine hydrochloride), crystal violet cations are sorbed through the ion-exchange mechanism by displacing the functional groups of the modifier from the surface.
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