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Effects of 2-hydroxypropyl α-cyclodextrin on the radioactive iodine sorption on activated carbon

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Abstract

Effect of 2-hydroxypropyl α-cyclodextrin (α-HPCD) on the iodine adsorption onto activated carbon (AC) was investigated. The iodine sorption efficiency increased with the sorption time, but the rate of increase in the sorption efficiency varied depending on the α-HPCD concentration. As a result, there were significant differences of up to 3 times in sorption efficiency between the α-HPCD concentrations in the sorption time of 3 days. There was almost no difference in the sorption efficiency between the α-HPCD concentrations in the sorption time of 10 days. It is considered that the sorption speed increased, because the molecules number increases and the affinity of iodine for AC increased as the iodine is included into α-HPCD.

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Acknowledgements

This work was supported by the Japan Society for the Promotion of Science through a Grant-in-Aid for Scientific Research (C) (No. 15K00581) and Radiation Disaster and Medical Science Research Center Joint Research. We are also grateful to Shinshu University and The University of Tokyo for providing the laboratory and to CycloChem Bio Co., Ltd. for providing us several cyclodextrin samples.

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Authors and Affiliations

  1. Research Center for Supports to Advanced Sciences, Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan

    Masahiro Hirota

  2. Isotope Science Center, The University of Tokyo, 2-11-16 Yayoi, Bunkyo, Tokyo, 113-0032, Japan

    Shogo Higaki

  3. Faculty of Life Sciences, Kumamoto University, 4-24-1 Kuhonji, Chuo, Kumamoto, 862-0796, Japan

    Shigeki Ito

  4. CycloChem Bio Co., Ltd., 7-4-5 Minamicho Minatoshima, Chuo, Kobe, 650-0047, Japan

    Yoshiyuki Ishida & Keiji Terao

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  1. Masahiro Hirota
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  2. Shogo Higaki
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  3. Shigeki Ito
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  4. Yoshiyuki Ishida
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  5. Keiji Terao
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Correspondence to Masahiro Hirota.

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Hirota, M., Higaki, S., Ito, S. et al. Effects of 2-hydroxypropyl α-cyclodextrin on the radioactive iodine sorption on activated carbon. J Radioanal Nucl Chem 328, 659–667 (2021). https://doi.org/10.1007/s10967-021-07672-5

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  • DOI: https://doi.org/10.1007/s10967-021-07672-5

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