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首页> 外文会议>Fifth International Conference on Ion Exchange Processes held on 5-9 July 1998 at Plas Coch College, The North East Wales Institute, Wrexham, UK >Treatment of Radiolactive Waste using a Titanosilicate Analogue of the Mineral Zorite
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Treatment of Radiolactive Waste using a Titanosilicate Analogue of the Mineral Zorite

机译：使用矿物锆石的钛硅酸盐类似物处理放射性废物

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摘要

Large volumees of aqueous nuclear waste arise from several different sources including nuclear power stations, reprocessing plants, military sites and research centres. One preferred technology involved in the treatment of such waste is ion exchange, specifically the use of inorganic ion exchangers for the separation of actinide elements, fission products and activated corrosion products. Column operation enables large reductions in volumes of liquid waste together with high decontamination factors. After use, the ion exchanger can be vitrified or encapsulated in cement for long-term disposal as high-level waste, while the larger volume of remaining material can be more easily disposed of as low-level waste. Inorganic ion exchangers have a number of advantages over organic ion exchangers including superior thermal, chemical and radiolytic stability, together with better compatibility with final waste forms. They also have high capacities and selectivities for certain monovalent and divalent cations.
机译：大量的含水核废料来自几种不同的来源，包括核电站，后处理厂，军事场所和研究中心。处理此类废物的一种优选技术是离子交换，特别是使用无机离子交换剂分离for系元素，裂变产物和活化腐蚀产物。色谱柱操作可大大减少液体废物的体积，并具有较高的净化系数。使用后，可以将离子交换剂玻璃化或封装在水泥中，作为高放废物进行长期处置，而较大数量的剩余材料可以更容易作为低放废物进行处置。无机离子交换剂相对于有机离子交换剂具有许多优势，包括优异的热，化学和辐射分解稳定性，以及与最终废物形式的更好相容性。它们还对某些一价和二价阳离子具有高容量和选择性。

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