Parameters of selective sorption of Co, Cu, Zn, and Cd by a soddy-podzolic soil and a chernozem

The adsorption and ion-exchange behavior of Co, Cu, Zn, and Cd were studied in two soils of different genesis. The sorption parameters and selectivity coefficients of the Me-Ca ion exchange were determined using the Langmuir and Freundlich adsorption isotherms and two models of ion-exchange sorption...

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Bibliographic Details
Published in:Eurasian soil science 2009-04, Vol.42 (4), p.385-393
Main Authors: Kruglov, S. V., Anisimov, V. S., Lavrent’eva, G. V., Anisimova, L. N.
Format: Article
Language:English
Subjects:
Adsorption
Analysis
Earth and Environmental Science
Earth Sciences
Geotechnical Engineering & Applied Earth Sciences
Heavy metals
Ion exchange
Ions
Laws, regulations and rules
Metals
Soil Chemistry
Soils
Sorption
Studies
Zinc
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Summary:The adsorption and ion-exchange behavior of Co, Cu, Zn, and Cd were studied in two soils of different genesis. The sorption parameters and selectivity coefficients of the Me-Ca ion exchange were determined using the Langmuir and Freundlich adsorption isotherms and two models of ion-exchange sorption based on the mass action law (a polyfunctional ion exchanger and a mixture of two ideal exchangers) for describing the relationships between the dissolved and sorbed metal forms. It was shown that simple models provided information for better understanding of the behavior of metals in sorption and ion-exchange processes, but the conclusions about the sorption of different metals in a specific soil or a specific metal in different soils based on these models can be different.
ISSN:1064-2293
1556-195X
DOI:10.1134/S106422930904005X