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Evaluation of Me2-CA-BTP/SiO2-P adsorbent for the separation of minor actinides from simulated HLLW

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Abstract

A novel silica-based adsorbent Me2-CA-BTP/SiO2-P was prepared to separate minor actinides from fission products in high level liquid waste. Me2-CA-BTP/SiO2-P adsorption behavior towards 241Am(III) and main FP from HNO3 solutions were studied. The adsorbent exhibited much higher affinity for Am(III) over FP elements in a large HNO3 concentration range and possess good adaptability as HNO3 concentration changes. Dy(III), as a simulated element of MA(III), showed good adsorption properties and elution performance. Dy(III) adsorption kinetics and isotherm followed the pseudo-second-order rate law and Langmuir isotherm adsorption model, respectively. Adsorbed Dy(III) could be effectively eluted from Me2-CA-BTP/SiO2-P by H2O or dilute HNO3.

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Acknowledgments

All of this study was carried out under the National Natural Science Foundation support with the Project No. 91126006, No.11305102, and the support of the Ministry of Education of Specialized Research Fund for the Doctoral Program of Higher Education with the Project No. 20130073110046.

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Authors and Affiliations

  1. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, China

    Shunyan Ning, Xinpeng Wang, Ruiqin Liu & Yuezhou Wei

  2. Shanghai Institute of Measurement and Testing Technology, 1500 Zhang Heng Road, Shanghai, 201203, China

    Linfeng He & Fangdong Tang

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  1. Shunyan Ning
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  2. Xinpeng Wang
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  3. Ruiqin Liu
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  6. Fangdong Tang
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Correspondence to Ruiqin Liu.

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Ning, S., Wang, X., Liu, R. et al. Evaluation of Me2-CA-BTP/SiO2-P adsorbent for the separation of minor actinides from simulated HLLW. J Radioanal Nucl Chem 303, 2011–2017 (2015). https://doi.org/10.1007/s10967-014-3651-7

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  • DOI: https://doi.org/10.1007/s10967-014-3651-7

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