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Langmuir isotherm and its application in ion-exchange reactions

✍ Scribed by Nasr Z. Misak

Book ID
103956565
Publisher
Elsevier Science
Year
1993
Weight
847 KB
Volume
21
Category
Article
ISSN
0923-1137

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✦ Synopsis

The simple Langmuir isotherm equation for adsorption of a single adsorbate on a single-site surface is still frequently applied to ion-exchange reactions. When a single straight line is not obtained by this equation, a multi-site surface is assumed and additional terms of the equation are used for analysis. Ion exchange should be considered as a competitive adsorption of two sorbates. Apart from the fact that the selectivity coefficient or separation factor must be constant, other conditions of application of the equation are frequently overlooked. This paper is intended to stress these conditions and to point to the uncertainties in the quantities and conclusions derived from the Langmuir plots of ion-exchange data.

πŸ“œ SIMILAR VOLUMES

Adsorption isotherms in ion exchange rea
Adsorption isotherms in ion exchange reactions. Further treatments and remarks on the application of the Langmuir isotherm
✍ Nasr Z. Misak πŸ“‚ Article πŸ“… 1995 πŸ› Elsevier Science 🌐 English βš– 814 KB

In a previous work, the author gave an adsorption isotherm for the general case of single-site heterovalent exchange and simpler approximate equations having linear forms involving the same plot used for the Langmuir isotherm. The present work gives a substantiation of these equations by calculation