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Preparation of silica-based titanate adsorbents and application for strontium removal from radioactive contaminated wastewater

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Abstract

K2Ti6O13/SiO2 adsorbents were prepared by sol–gel method and good microcrystalline K2Ti6O13 phases were formed at 500 °C. From EDS of the adsorbents before and after adsorption of Sr2+ it showed that there was ion-exchange reaction between K+ and Sr2+. Experimental data on adsorption isotherms were best fit by the Freundlich and Langmuir–Freundlich model. The experimental data indicated that the pseudo-second order kinetic equation was best fit for both single Sr2+ solution and simulated Fukushima wastewater. The pH approaching to neutral displayed a better adsorption behavior for Sr2+ solution. The breakthrough capacity for treatment of Fukushima wastewater increased with decreasing flow rate and increasing bed diameter.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (21261140335, 91126006, 11405106), Scientific Research Foundation for Youth Scholars of Shanghai Jiao Tong University (AF0200003).

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Authors and Affiliations

  1. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Z. Chen, Y. Wu & Y. Wei

  2. Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Miyagi-ken, 980-8579, Japan

    H. Mimura

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  1. Z. Chen
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  2. Y. Wu
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  3. Y. Wei
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  4. H. Mimura
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Correspondence to Y. Wei.

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Chen, Z., Wu, Y., Wei, Y. et al. Preparation of silica-based titanate adsorbents and application for strontium removal from radioactive contaminated wastewater. J Radioanal Nucl Chem 307, 931–940 (2016). https://doi.org/10.1007/s10967-015-4470-1

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  • DOI: https://doi.org/10.1007/s10967-015-4470-1

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