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A new composite of crystalline silicotitanate for sequestration of 137Cs and 90Sr from low-level aqueous waste solution |
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| Authors: | Priyanka Kamble Prithwish Sinha Roy Arvind Ananthanarayanan Jayesh G Shah Gopalakrishnan Sugilal |
| Affiliation: | 1. Homi Bhabha National Institute, Mumbai, India;2. Nuclear Recycle Group, Bhabha Atomic Research Centre, Mumbai, India;3. Nuclear Recycle Group, Bhabha Atomic Research Centre, Mumbai, India |
| Abstract: | ABSTRACTA new composite of crystalline silicotitanate (CST) has been synthesized for the sequestration of Cs and Sr from low-level liquid waste generated in the nuclear industry. The product characterization using X-RAY DEFRACTION (XRD) and Fourier-transform infrared spectroscopy (FTIR) confirmed the presence of CST crystals in the composite. Sorption studies carried out under various test conditions showed that the composite has high affinity for both Cs and Sr. Results of structural characterization of Cs and Sr-loaded CST indicated that the overall structural integrity remained intact after substitution of Na+ by Cs+ or Sr2+. The exceedingly good Cs and Sr sorption performance displayed by the CST composite will find applications in the treatment of nuclear waste. |
| Keywords: | Crystalline silicotitanate composite Cs Sr removal separation low-level waste |