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Use of immobilized tannin adsorbent for removal of Cr(VI) from water

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Abstract

Adsorption of Cr(VI) by two tannin sorbents is evaluated using radiotracers. Evaluation of the sorption process shows that the Cr(VI)-tannin molecule binding is the principal responsible for chromium adsorption. High sorption capacities were registered for both sorbents at pH 2. ForEucaliptus Saligna Sm sorbent (ETS) sorption capacity is 0.92±0.03 mmol/g and forLysiloma latisiliqua sorbent (LTS) is 3.8±0.3 mmol/g. Influence of different ions present in water is examined. High sorption capacity is reported for LTS in sea and tap water samples. It represents 90–94% of adsorption in distillated water.

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Authors and Affiliations

  1. Instituto Superior de Ciencias y Technología Nucleares, Salvandor Allende Ave, y Luaces, 6163, Havana, Cuba

    L. Lima, S. Olivares, F. Martínez, J. Torres & D. de la Rosa

  2. Instituto de Pesquisas Energéticas e Nucleares, C.P. 11049-CEP 055422-970, S. Paulo, Brazil

    C. Sepúlveda

Authors
  1. L. Lima
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  2. S. Olivares
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  3. F. Martínez
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  4. J. Torres
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  5. D. de la Rosa
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  6. C. Sepúlveda
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Lima, L., Olivares, S., Martínez, F. et al. Use of immobilized tannin adsorbent for removal of Cr(VI) from water. J Radioanal Nucl Chem 231, 35–40 (1998). https://doi.org/10.1007/BF02388001

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  • DOI: https://doi.org/10.1007/BF02388001

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