Abstract
Porous isobutyl-BTP/SiO2-P adorbent was prepared to separate MA(III) from HLLW. The adsorption behavior of isobutyl-BTP/SiO2-P toward 241Am(III), Y(III) and Ln(III) in 0.01 M HNO3–NaNO3 solution was studied. Isobutyl-BTP/SiO2-P showed high adsorption selectivity toward 241Am(III) over Y(III) and Ln(III) fission products. Adsorption kinetics of Dy(III) followed pseudo-second-order rate equation, and its adsorption isotherm matched the Langmuir isotherm equation well. Moreover, the adsorption product of Dy(III) on isobutyl-BTP/SiO2-P was studied using extended X-ray absorption fine structure (EAXFS) method and Dy(isobutyl-BTP/SiO2-P)3 3+ was supposed as the main adsorption species.
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Acknowledgments
The work was carried out under the National Natural Science Foundation support with the Project Nos. 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. The EXAFS experiments were carried out at beam line BL14W1 of the Shanghai Synchrotron Radiation Facility (SSRF), China. We are very grateful to Bruce Ravel etc. for free offering the ifeffit 8.5 software code.
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Wang, X., Ning, S., Zou, Q. et al. Adsorption behavior and mechanism of isobutyl-BTP/SiO2-P adsorbent for Am(III) and Ln(III) in nitrate solution. J Radioanal Nucl Chem 307, 2001–2008 (2016). https://doi.org/10.1007/s10967-015-4635-y
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DOI: https://doi.org/10.1007/s10967-015-4635-y