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Issue 6, 2019
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Removal of 90Sr from highly Na+-rich liquid nuclear waste with a layered vanadosilicate

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Abstract

Capture of trace amounts (parts per trillion or ppt level) of 90Sr from highly Na+-rich (5 M or 115 000 parts per million) liquid wastes produced from reprocessing of spent nuclear fuel rods is crucial for continuous operation of nuclear power plants. However, no sorbents have shown such abilities. We now report that a novel layered vanadosilicate, SGU-7, with the unit cell parameters of a = 23.58 Å, b = 30.04 Å, c = 12.31 Å, β = 100.2°, and space group of P121/a1, can effectively capture 90Sr from a 5 M Na+ solution containing 6.2 ppt of 90Sr. It also effectively captures 1-ppb level 226Ra from 2 M NaCl solution, and Cs+ and Sr2+ from groundwater, demonstrating that it can be immediately used to remedy groundwater and soil contaminated with 226Ra, 90Sr, and 137Cs.

Graphical abstract: Removal of 90Sr from highly Na+-rich liquid nuclear waste with a layered vanadosilicate

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Publication details

The article was received on 09 Nov 2018, accepted on 01 Apr 2019 and first published on 02 Apr 2019


Article type: Communication
DOI: 10.1039/C8EE03302A
Energy Environ. Sci., 2019,12, 1857-1865

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    Removal of 90Sr from highly Na+-rich liquid nuclear waste with a layered vanadosilicate

    S. J. Datta, P. Oleynikov, W. K. Moon, Y. Ma, A. Mayoral, H. Kim, C. Dejoie, M. K. Song, O. Terasaki and K. B. Yoon, Energy Environ. Sci., 2019, 12, 1857
    DOI: 10.1039/C8EE03302A

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