Characterisation and disposability assessment of multi-waste stream in-container vitrified products for higher activity radioactive waste.
Characterisation and disposability assessment of multi-waste stream in-container vitrified products for higher activity radioactive waste.
复制标题
高活性放射性废物的容器内玻璃化产品的多废物流的表征和可处置性评估。
DOI：
10.1016/j.jhazmat.2020.123764
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发表时间：
2021
影响因子：
13.6
通讯作者：
N. Hyatt
中科院分区：
文献类型：
--
作者：
S. Walling;M. Kauffmann;L. J. Gardner;D. Bailey;M. Stennett;C. Corkhill;N. Hyatt
对模拟英国核废料的GeoMelt®容器内玻璃化（ICV）™材料进行了表征，以了解异质产品中元素的分配，包括感兴趣的放射性核素物种的非活性替代物。进行水性耐久性分析以评估所得废物的潜在可处置性。玻璃化试验旨在固定各种模拟遗留废物流，这些废物流代表英国的退役操作，包括钚污染材料，Magnox污泥和离子交换材料，这些材料在添加玻璃形成添加剂后被玻璃化。对不同废物的两个试验进行了表征，得到的玻璃状废物形式在玻璃状基质内包含橄榄石和辉石结晶矿物。钚替代元素固定在玻璃级分，而不是分区成结晶相。在28天的时间内，所有玻璃化产品都表现出与现有英国高放废物玻璃化核废物形式相当或更高的耐久性。
Materials from GeoMelt® In-Container Vitrification (ICV)™ of simulant UK nuclear wastes were characterised to understand the partitioning of elements, including inactive surrogates for radionuclide species of interest, within the heterogeneous products. Aqueous durability analysis was performed to assess the potential disposability of the resulting wasteforms. The vitrification trial aimed to immobilise a variety of simulant legacy waste streams representative of decommissioning operations in the UK, including plutonium contaminated material, Magnox sludges and ion-exchange materials, which were vitrified upon the addition of glass forming additives. Two trials with different wastes were characterised, with the resultant vitreous wasteforms comprising olivine and pyroxene crystalline minerals within glassy matrices. Plutonium surrogate elements were immobilised within the glassy fraction rather than partitioning into crystalline phases. All vitrified products exhibited comparable or improved durability to existing UK high level waste vitrified nuclear wasteforms over a 28 day period.
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
影响因子：
3.1
作者：
Hyatt N
通讯作者：
Hyatt N
影响因子：
3.5
作者：
D. Backhouse;C. Corkhill;N. Hyatt;R. Hand
通讯作者：
D. Backhouse;C. Corkhill;N. Hyatt;R. Hand