Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.751648
Title: Some studies of uni-bivalent anion-exchange systems
Author: Birch, Brian Jeffrey
Awarding Body: University of Surrey
Current Institution: University of Surrey
Date of Award: 1966
Availability of Full Text:
Access from EThOS:
Access from Institution:
Abstract:
A previous statistical thermodynamic relationship between the ionic fraction of species in solution and in the resin phase for uni-bivalent anion exchange processes has been extended for exchange in media of constant equivalent concentration. From this relationship, a method of obtaining the standard free energy and enthalpy of exchange has been developed, such that the thermodynamic parameters found are referred to the same standard state for any given anion exchanger. Values of the standard enthalpy of exchange and of the heat of swelling of resins have also been found by means of a calorimetric technique. In general, changes in standard free energy and enthalpy with selectivity are in accordance with those predicted by the theory and a relationship between selectivity and the water-regain value of a resin has been observed. It has been possible to transform the selectivity expression into the same form as the semi-empirical expression due to Kielland and into the expression, derived by a rigorous thermodynamic treatment, due to Gaines and Thomas.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.751648  DOI: Not available
Share: