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Sorption of Ni, Zn and Cd on Sepiolite

Published online by Cambridge University Press:  09 July 2018

E. Helios-Rybicka*
Affiliation:
Academy of Mining and Metallurgy, Institute of Geology and Mineral Deposits, 30-059 Cracow, Al. Mickiewicza 30, Poland

Extract

The ability of clay minerals to adsorb heavy metal cations is an important property in the context of the increasing contamination of the aquatic environment and soils by toxic waste. Laboratory studies of the sorption of heavy metals by clays have mostly been carried out using montmorillonite and illite (Chester, 1965; Egozy, 1970; Bourg & Filby, 1974; Helios-Rybicka & Schoer, 1982), less frequently for kaolinite, and only rarely for mixed-layer illite-montmorillonite (Helios-Rybicka, 1983) and the fibrous clay minerals sepiolite and palygorskite. This note describes the sorptive behaviour of sepiolite towards Ni, Zn and Cd.

Type
Notes
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1985

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References

Bourg, A.C.M. & Filby, R.H. (1974) Adsorption isotherms for the uptake of Zn2+ by clay minerals in a freshwater medium. Proc. Int. Conf. Transp. Persist. Chem. Aquatic Ecosyst, Canada, II- 118.Google Scholar
Chester, R. (1965) Adsorption of zinc and cobalt on illite in seawater. Nature 206, 884886.CrossRefGoogle Scholar
Egozy, Y. (1980) Adsorption of cadmium and cobalt on montmorillonite as a fraction of solution composition. Clays Clay Miner. 20, 311318.CrossRefGoogle Scholar
Helios-Rybicka, E. & Schoer, J. (1982) The influence of Fe-oxide coatings on the adsorption of Zn onto clay minerals. Miner. Pol. 13, 6169.Google Scholar
Helios-Rybicka, E. (1983) Zn, Cd and Mn sorption on some clay minerals. Miner. Pol. 14, 5764.Google Scholar
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