Abstract
Activated carbon can potentially be used as an adsorbent for removing Tc from aqueous solutions. Five carbon materials were prepared by soaking of fibrous cellulose with different solutions containing inorganic compounds suitable for creation of micropores. After drying, materials were carbonized at 500–800 °C, characterized by BET, acid–base titration, HRTEM and SAXRD methods and tested on their adsorption capabilities for pertechnetate. Adsorption kinetics of the pertechnetate ion on these materials is relatively fast and depends on pH. For some sorbents, a 99 %-adsorption within 1 min was found. One of the variables used to characterize of pertechnetate adsorption is distribution coefficient Kd. Maximum Kd of about 7 × 104 mL g−1 was measured for acidic pH (pH 2–3). In general, Kd was decreasing with increasing pH; however, the sample treated with zinc chloride sorbed TcO4 − very well even at pH 8 (Kd = 5 × 103 mL g−1).
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This contribution/publication is the result of the project implementation: CE for development and application of advanced diagnostic methods in processing of metallic and non-metallic materials, ITMS: 26220120048, supported by the Research and Development Operational, Program funded by the ERDF.
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Rajec, P., Galamboš, M., Daňo, M. et al. Preparation and characterization of adsorbent based on carbon for pertechnetate adsorption. J Radioanal Nucl Chem 303, 277–286 (2015). https://doi.org/10.1007/s10967-014-3303-y
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DOI: https://doi.org/10.1007/s10967-014-3303-y