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Adsorption of pertechnetate ion on active carbon from acids and their salt solutions

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Abstract

The adsorbability of pertechnetate ion (TcO −4 ) reached 96% for an active carbon at the 0.1 g/50 ml concentration level, increasing with diminution of acid and its salt concentrations, and depending on the type of anions present. With constant anion concentration, TcO −4 adsorbability rose with decreasing pH in the acidic region, followed in the region around neutrality by a plateau, and in the basic region by an appreciable decline of TcO −4 adsorbability. In the acidic region, part of once-adsorbed TcO −4 appeared to be displaced by other anions. Reversibility was noted between the adsorption and desorption of TcO −4 .

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Authors and Affiliations

  1. Research Institute of Mineral Dressing and Metallurgy, Tohoku University, Katahira-2, Aoba-ku, 980, Sendai, (Japan)

    K. Ito & K. Akiba

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  1. K. Ito
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  2. K. Akiba
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Ito, K., Akiba, K. Adsorption of pertechnetate ion on active carbon from acids and their salt solutions. Journal of Radioanalytical and Nuclear Chemistry, Articles 152, 381–390 (1991). https://doi.org/10.1007/BF02104691

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  • DOI: https://doi.org/10.1007/BF02104691

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