中文摘要：

为研究珍珠岩粉体对含^90Sr放射性核废液的吸附性能，利用St（NO3）2配置一定浓度的模拟核废液，以不同粒度的珍珠岩粉体为吸附剂，进行珍珠岩对模拟核废液中Sr^2＋的吸附性能研究。利用X射线荧光光谱仪、扫描电子显微镜和原子吸收光谱对样品中的元素含量、微观形貌及对Sr^2＋的吸附行为进行表征。结果表明：溶液为中性条件下，珍珠岩粉体对Sr^2＋的处理是以快速吸附机制进行的：珍珠岩对Sr^2＋的去除效果与样品的粒度呈一致性关系，粒度在75～100μm范围的珍珠岩对于SP的处理效果最好。5min时对Sr^2＋的去除率即可达到89％以上。珍珠岩粉体适合于对含SP中性放射性废液进行快速处理。

英文摘要：

In order to investigate the adsorptive power of radioactive nuclear waste liquid with perlite powder used as adsorbent, Sr （NO3）2 was used as the simulacrum for radioactive waste liquid of middle level containing ^90Sr, and the natural perlite with different size was used as adsorbent. The adsorptive experiment of Sr^2＋ was conducted using perlite powder. The chemical compositions of perlite, micro-structures of the as-gained samples and adsorptive results of Sr^2＋ were irrespectively characterized by means of X-ray fluorescence spectrometry, scanning electron microscopy and atomic absorption spectrometry. The results indicated that the disposal of Sr^2＋was quickly carried by perlite powder as adsorptive materials under the condition of pH=7, the relation between the treatment effect on Sr^2＋ particle size was consistent, the best treatment effect in which the remove rate was 89% after 5 min was found when the size ofperlite was 75-100 μm. Perlite powder was a better candidate for the disposal of neutral solution containing Sr^2＋.