Abstract
The adsorption of zinc ions is measured in systems containing complexes of sodium clay (montmorillonite) with aluminium hydroxide polymers (indicated as CALHO) at pH 6.6 and pH 5.0. Zinc adsorbs in such systems as well on the siloxane surface of the clay (Zn-CEC) as on the aluminium hydroxide polymers (Zn-ALHO). The total amount of zinc adsorbed on CALHO is several times higher than on the pure clay at pH 6.6. The higher adsorption capacity of CALHO is due to the adsorption of zinc ions on the aluminium hydroxide polymers (ALHO). At pH 5.0 the total amount of zinc adsorbed on CALHO is lower than on the pure sodium clay. Zinc binding is surpressed due to competition with exchangeable Al3+ and less zinc is adsorbed to the ALHO.
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References
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© 1993 Springer Science+Business Media Dordrecht
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Janssen, R.P.T., Bruggenwert, M.G.M., van Riemsdijk, W.H. (1993). Adsorption of Zn By Complexes of Clay/Al-Hydroxide Polymers. In: Eijsackers, H.J.P., Hamers, T. (eds) Integrated Soil and Sediment Research: A Basis for Proper Protection. Soil & Environment, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2008-1_55
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DOI: https://doi.org/10.1007/978-94-011-2008-1_55
Publisher Name: Springer, Dordrecht
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