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Calcium alginate and chitosan as potential sorbents for strontium radionuclide

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Abstract

This work reports the adsorption of strontium(II) from aqueous solutions onto calcium alginate (CA) and chitosan (CH) materials. The adsorption process was studied in batch experiments as a function of the pH of the solution, contact time, and temperature. Freundlich isotherm was found to describe the sorption process comparatively well as the Langmuir model. Laboratory obtained spherical beads of CA seems to be a better sorbent than commercially available materials. A contact time of about 4 h and neutral pH of the initial aqueous solution seem to be optimal conditions for Sr-85 to be removed from contaminated solutions using alginate beads.

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Notes

  1. Appropriate theoretical calculations were carried out by using the SPARTAN 2008 program [22] running on the PC. Geometry optimization and calculation of the atomic charges in the d-glucosamine and N-acetyl-d-glucosamine were performed at the Hartree–Fock level within the model UHF/3-21G(*). In particular, Natural Atomic Charges of the amine group decrease from −0.9246 and −0.7600 to −0.2870 and −0.3280 in the d-glucosamine and N-acetyl-d-glucosamine, respectively.

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Acknowledgments

This research has been financed from the National Centre for Research and Development (Poland) through the Strategic Program "Technologies Supporting Development of Safe Nuclear Power Engineering", task 4 "Development of spent nuclear fuel and radioactive waste management techniques and technologies".

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Authors and Affiliations

  1. Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195, Warsaw, Poland

    Leon Fuks, Agata Oszczak & Ewa Gniazdowska

  2. Maria Curie-Sklodowska University, Pl. M. Curie-Sklodowskiej 2, 20-031, Lublin, Poland

    Dariusz Sternik

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  1. Leon Fuks
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  2. Agata Oszczak
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  4. Dariusz Sternik
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Correspondence to Leon Fuks.

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Fuks, L., Oszczak, A., Gniazdowska, E. et al. Calcium alginate and chitosan as potential sorbents for strontium radionuclide. J Radioanal Nucl Chem 304, 15–20 (2015). https://doi.org/10.1007/s10967-014-3698-5

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  • DOI: https://doi.org/10.1007/s10967-014-3698-5

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