Institute of Nuclear Energy Research, Jiaan Village, Longtan Township, Taoyuan County 32546, Taiwan, ROC.
J Hazard Mater. 2012 Sep 30;233-234:140-7. doi: 10.1016/j.jhazmat.2012.07.009. Epub 2012 Jul 11.
There were approximately 926 m(3) of water contaminated by fission products and actinides in the Taiwan Research Reactor's spent fuel pool (TRR SFP). The solid and ionic contaminants were thoroughly characterized using radiochemical analyses, scanning electron microscopy equipped with an energy dispersive spectrometer (SEM-EDS), and inductively coupled plasma optical emission spectrometry (ICP-OES) in this study. The sludge was made up of agglomerates contaminated by spent fuel particles. Suspended solids from spent ion-exchange resins interfered with the clarity of the water. In addition, the ionic radionuclides such as (137)Cs, (90)Sr, U, and α-emitters, present in the water were measured. Various filters and cation-exchange resins were employed for water treatment trials, and the results indicated that the solid and ionic contaminants could be effectively removed through the use of <0.9 μm filters and cation exchange resins, respectively. Interestingly, the removal of U was obviously efficient by cation exchange resin, and the ceramic depth filter composed of diatomite exhibited the properties of both filtration and adsorption. It was found that the ceramic depth filter could adsorb β-emitters, α-emitters, and uranium ions. The diatomite-based ceramic depth filter was able to simultaneously eliminate particles and adsorb ionic radionuclides from water.
台湾研究反应堆乏燃料水池中约有 926 立方米的水受到裂变产物和锕系元素的污染。在这项研究中，使用放射性化学分析、配备能量色散光谱仪的扫描电子显微镜 (SEM-EDS) 和电感耦合等离子体发射光谱法 (ICP-OES) 对固体和离子污染物进行了彻底的表征。污泥由被乏燃料颗粒污染的团聚物组成。来自废离子交换树脂的悬浮固体干扰了水的透明度。此外，还测量了水中存在的放射性核素，如 (137)Cs、(90)Sr、U 和 α 发射体。进行了各种过滤器和阳离子交换树脂的水处理试验，结果表明，使用 <0.9 μm 过滤器和阳离子交换树脂可以有效去除固体和离子污染物。有趣的是，阳离子交换树脂对 U 的去除效果明显，由硅藻土制成的陶瓷深度过滤器同时具有过滤和吸附的特性。研究发现，陶瓷深度过滤器可以吸附β-发射体、α-发射体和铀离子。基于硅藻土的陶瓷深度过滤器能够同时从水中去除颗粒和吸附离子放射性核素。
