Abstract
The Cu2O/Cu modified shungite (ShC) absorbent (Cu2O/Cu-ShC) was synthesized by hydrothermal method, benefiting from the mineral backbone and Cu2O/Cu particles, Cu2O/Cu-ShC can remove ~ 96% of I− within 60 min, the batch experiments showed that the I− adsorption process follows pseudo-second-order model and Langmuir model with maximum adsorption capacity of 10.99 mg/g. The high binding affinity between Cu+ and I− contributes effective removal of I− and excellent selectivity at high concentrations of competing ions. This work highlights the feasibility of Cu2O/Cu-ShC for the radioactive iodine separation, and provides a promising sorbent material for large-scale purification of radioactive iodine anions in wastewater.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (NSFC, Grant Number 42061134018) and the Russian Science Foundation (RSF, Grant Number 21-47-00019), the Project of Spent Fuel Reprocessing (KY20007), the Project of Science and Technology Department of Sichuan Province (No. 2021JDTD0019) and the Doctoral Research Foundation Project of Southwest University of Science and Technology (No. 22zx7173).
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Tang, H., Zhang, M., Ran, F. et al. Efficient immobilization of iodide from aqueous solution by Cu2O/Cu modified shungite. J Radioanal Nucl Chem 333, 545–556 (2024). https://doi.org/10.1007/s10967-023-09267-8
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DOI: https://doi.org/10.1007/s10967-023-09267-8