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Multicomponent equilibrium theory for ion‐exchange columns involving reactions
Author(s) -
Hwang YngLong,
Helfferich Friedrich G.,
Leu RongJin
Publication year - 1988
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690341005
Subject(s) - chemistry , dissociation (chemistry) , ion exchange , adsorption , thermodynamics , ion , ion chromatography , statistical physics , chromatography , organic chemistry , physics
The multicomponent equilibrium theory for ion‐exchange columns (chromatography) has been extended to systems accompanied by reactions in either or both phases. Based on the concept of coherence of concentration waves in the original theory, the proposed approach includes a systematic way to determine the thermodynamic variance and a general mathematical formulation to construct the composition path grid by means of numerical techniques. With proper adjustments, this approach can be applied as well to adsorption columns involving reactions. As a practical example, a comparison of predicted and observed effluent histories for an anion‐exchange system with dissociation‐association reactions is shown.