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Sur l'adsorption d'ions phosphoriques par les argiles

Published online by Cambridge University Press:  14 March 2018

S. Goldsztaub ,
S. Hénin  and
R. Wey
S. Goldsztaub
Affiliation:
Laboratoire de Minéralogie et de Pétrographie, Université de Strasbourg
S. Hénin
Affiliation:
Laboratoire de Minéralogie et de Pétrographie, Université de Strasbourg
R. Wey
Affiliation:
Laboratoire de Minéralogie et de Pétrographie, Université de Strasbourg
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Abstract

The adsorption of phosphate by montmorillonite and kaolinite (Na+ and Ca++) shows a maximum at pH 4–5, being 18 ± 2 mgm. eq./100 gm. of calcined montmorillonite (assumed as H2PO4−). This agrees with the calculated value for edge-adsorption, allowing for some steric hindrance (assumed crystallite diameter 300 Å). It is in accord with this idea, that pyrophyllite is found also to fix phosphate, but not talc and hectorite.

Type
Research Article
Information
Clay Minerals Bulletin , Volume 2 , Issue 12 , December 1954 , pp. 162 - 166
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1954

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