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Purification of waste waters containing 60Co2+, 115mCd2+ and 203Hg2+ radioactive ions by ETS-4 titanosilicate

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Summary

The sorption of 60Co2+, 115mCd2+ and 203Hg2+ from diluted solutions (as analogues for radioactive waste waters) on ETS-4 microporous titanosilicate was studied at 277, 293, 313 and 333 K by measuring the sorption kinetics using a batch-method. The sorption of these radiocations was compared by means of the distribution coefficient and of the sorption capacity. The maximum sorption capacities follow the order: 203Hg2+>115mCd2+³60Co2+. The thermodynamic functions of the sorption processes have been estimated. The increase of the absolute value of DG° with increasing temperatures shows that higher temperatures favor ionic exchange.

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Authors and Affiliations

  1. Department of Inorganic and Analytical Chemistry, “Al.I. Cuza” University, 11 - Carol I Blvd., 700506 - Iasi, Romania

    K. Popa

  2. Department of Theoretical, Physical and Materials Chemistry, “Al.I. Cuza” University, 11 - Carol I Blvd., 700506 - Iasi, Romania

    C. C. Pavel

  3. Department of Theoretical, Physical and Materials Chemistry, “Al.I. Cuza” University, 11 - Carol I Blvd., 700506 - Iasi, Romania

    N. Bilba

  4. Department of Inorganic and Analytical Chemistry, “Al.I. Cuza” University, 11 - Carol I Blvd., 700506 - Iasi, Romania

    A. Cecal

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  1. K. Popa
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  2. C. C. Pavel
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  3. N. Bilba
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  4. A. Cecal
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Popa, K., Pavel, C., Bilba, N. et al. Purification of waste waters containing 60Co2+, 115mCd2+ and 203Hg2+ radioactive ions by ETS-4 titanosilicate. J Radioanal Nucl Chem 269, 155–160 (2006). https://doi.org/10.1007/s10967-006-0245-z

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  • DOI: https://doi.org/10.1007/s10967-006-0245-z

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