Determination of the parameters of the Högfeldt model for the nitrate-chloride ion exchange on different resins and in different media. Variation with the water activity of the solution

The Högfeldt three-parameter model has been applied to nitrate-chloride ion exchange in diluted and in concentrated solutions. The three parameters of the model have been calculated and their variation with the water activity of the solution, the crosslinking degree of the resin, and the nature of t...

Full description

Saved in:
Bibliographic Details
Published in:Reactive & functional polymers 1996, Vol.28 (2), p.139-147
Main Authors: Marina, M.L., Canfranc, E., Esteban, F.J., Poitrenaud, C.
Format: Article
Language:English
Subjects:
Concentrated solutions
Nitrate-chloride ion exchange
Selectivity coefficient
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Högfeldt three-parameter model has been applied to nitrate-chloride ion exchange in diluted and in concentrated solutions. The three parameters of the model have been calculated and their variation with the water activity of the solution, the crosslinking degree of the resin, and the nature of the co-ion (Li +, Na +, K +, and NH 4 +) has been determined. For a given resin and a given co-ion the results show that the Högfeldt model can be applied to ion-exchange data in concentrated solutions only if the variation of the parameters with the water activity of the solution is taken into account.
ISSN:1381-5148
DOI:10.1016/1381-5148(95)00051-8