Thermal treatment of simulant plutonium contaminated materials from the Sellafield site by vitrification in a blast-furnace slag
Thermal treatment of simulant plutonium contaminated materials from the Sellafield site by vitrification in a blast-furnace slag
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通过在高炉矿渣中玻璃化对来自塞拉菲尔德场地的模拟钚污染材料进行热处理
DOI:
10.1016/j.jnucmat.2013.08.019
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发表时间:
2014
影响因子:
3.1
通讯作者:
Hyatt N
中科院分区:
文献类型:
--
作者:
Hyatt N
Four waste simulants, representative of Plutonium Contaminated Materials (PCMs) at the Sellafield site, were vitrified through additions of Ground Granulated Blast-furnace Slag (GGBS). Ce (as a Pu surrogate) was effectively partitioned into the slag product, enriched in an amorphous CaO–Fe2O3–Al2O3–SiO2phase when other crystalline phases were also present. Ce L3edge XANES data demonstrated Ce to be present as trivalent species in the slag fraction, irrespective of the waste type. Estimated volume reductions of ca. 80–95% were demonstrated, against a baseline of uncompacted 200 L PCM waste drums. The dissolution behaviour of PCM slag wasteforms was investigated at 50 °C in saturated Ca(OH)2solution under N2atmosphere, to simulate the hyperalkaline anoxic environment of a cementitious UK Geological Disposal Facility for Intermediate Level Waste (ILW). These experiments demonstrated the performance of the slag wasteforms to be comparable to that of other vitrified ILW materials considered potentially suitable for geological disposal.
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DOI:
--
发表时间:
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期刊:
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通讯作者:
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