Abstract
The paper has investigated sorption of Cr(VI) from aqueous solutions by calcined forms of Zn/Al- and Mg/Fe-hydrotalcites. We have determined the impact of sulfate-, hydrocarbonate- and nitrate-ions on the degree of removal of Cr(VI) from aqueous solutions. The most effective removal of chromate-ions from aqueous solution by calcined forms of hydrotalcites is observed in an acid and weakly acid region of the pH: at an increase of the pH from 4 to 8 the adsorption values decrease by ∼ 6–7%.
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Original Russian Text © G.N. Pshinko, L.N. Puzyrnaya, B.P. Yatsyk, A.A. Kosorukov, V.V. Goncharuk, 2014, published in Khimiya i Tekhnologiya Vody, 2014, Vol. 36, No. 6, pp. 479–490.
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Pshinko, G.N., Puzyrnaya, L.N., Yatsyk, B.P. et al. Removal of Cr(VI) from aqueous solutions by calcined Zn/Al- and Mg/Fe-hydrotalcites. J. Water Chem. Technol. 36, 257–264 (2014). https://doi.org/10.3103/S1063455X14060010
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DOI: https://doi.org/10.3103/S1063455X14060010