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Sorption of Cr(VI) ions by oxyhydrates of M x Al1−x O y · nH2O composition, where M is Zr(IV), Ti(IV), or Sn(IV)

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Abstract

The equilibrium and kinetics of Cr(VI) ion sorption from acidic (pH 2.5) and alkaline (pH 10.5) aqueous solutions by oxyhydrates of the M x Al1 − x O y · nH2O composition, where M is Zr(IV), Ti(IV), or Sn(IV) and x = 0.0−0.7, are studied. It is shown that the sorption equilibrium can be described using the Langmuir model. The effective diffusion coefficients of Cr(VI) ions calculated from the exchange half-time and specific conductivity of oxyhydrates measured after the sorption of the target component are (0.11–0.28) × 10−11 m2 s−1.

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Authors and Affiliations

  1. Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Palladina 32/34, Kyiv-142, 03680, Ukraine

    E. O. Kudelko, T. V. Mal’tseva & V. N. Belyakov

Authors
  1. E. O. Kudelko
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  2. T. V. Mal’tseva
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  3. V. N. Belyakov
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Original Russian Text © E.O. Kudelko, T.V. Mal’tseva, V.N. Belyakov, 2012, published in Kolloidnyi Zhurnal, 2012, Vol. 74, No. 3, pp. 337–342.

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Kudelko, E.O., Mal’tseva, T.V. & Belyakov, V.N. Sorption of Cr(VI) ions by oxyhydrates of M x Al1−x O y · nH2O composition, where M is Zr(IV), Ti(IV), or Sn(IV). Colloid J 74, 313–318 (2012). https://doi.org/10.1134/S1061933X12010073

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  • DOI: https://doi.org/10.1134/S1061933X12010073

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