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Interaction of Fe-oxyhydroxide colloidal particles with montmorillonite

Published online by Cambridge University Press:  09 July 2018

E. A. Ferreiro ,
A. K. Helmy  and
S. G. De Bussetti
E. A. Ferreiro
Affiliation:
Universidad Nacional del Sur, 8000 Bahía Blanca, Repútblica Argentina
A. K. Helmy
Affiliation:
Universidad Nacional del Sur, 8000 Bahía Blanca, Repútblica Argentina
S. G. De Bussetti
Affiliation:
Universidad Nacional del Sur, 8000 Bahía Blanca, Repútblica Argentina
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Abstract

Interaction between positively charged Fe-oxyhydroxide (β-FeOOH) particles and negatively charged particles of montmorillonite was studied as a function of particle concentration, pH and time. The results showed that the clay particles appear to bridge between FeOOH particles leading to associations in which the ratio of positive to negative particles varied between 1.4 and 2.56 depending on pH and particle concentrations. The data could be represented by isotherms of interaction of the high affinity type and, together with the interaction kinetics, could be described by Langmuir type formulations.

Type
Research Article
Information
Clay Minerals , Volume 30 , Issue 3 , September 1995 , pp. 195 - 200
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1995

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