Abstract
1. A method is proposed for studying the sorption of organic ions on cross-linked polyelectrolytes; this is based on an analysis of the variation of the differential heat of sorption and the concentration exchange constant under alteration of the degree of filling of the sorbate with the organic ion. 2. A study has been made of the differential and integral thermodynamic functions for the sorption of Novocaine, Oleandomycin, and tetracycline on Biocarb, a carboxylic cation-exchanger. 3. Estimates of the enthalpy of sorption in these systems have been made on the basis of an electrostatic model for sorbent-sorbate interaction. Evidence indicating that this is a type of ion-ion interaction at low degree of sorbent filling has been obtained. 4. The concentration ion-exchange constant for sorption from aqueous solution increases at high degree of sorbent filling (positive cooperative effect). For sorption from methanol solution, the concentration constant and the differential heat of ion exchange remain constant over the entire range of sorbent filling by the organic ion.
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Schedule a callMore From: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
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