普鲁士蓝类复合材料去除放射性铯的研究进展

铯是放射性废水主要成分之一,其半衰期长、危害程度大。普鲁士蓝类化合物具有优良的铯选择性,因此成为了主流的除铯材料。但是单独应用普鲁士蓝除铯效率低,且容易造成二次污染,难以适应实际需求。为解决这些问题,很多研究尝试使用载体负载普鲁士蓝,达到了增大吸附量、提高除铯效率和处理后易于分离等效果。本文详细介绍了普鲁士蓝类复合材料的载体种类,以及与晶体学、反应动力学、吸附等温线和热力学分析等有关的反应机理。希望能为相关的研究提供参考。

Research and Progress on Removal of Cesium by Prussian Blue Analogue Composites

Cesium, with long half-life and huge harms to ecosystem, is one of the main components of radioactive waste water. Prussian blue analogue compounds have excellent cesium selective removal. However, Prussian blue direct application in cesium removal is not feasible due to difficulty with the solid-liquid separation that is caused by the fine particle size. In order to solve these problems, many studies have tried to load Prussian blue analogue on the different carriers. This approach increases the adsorption capacity of cesium, improves the removal of cesium and makes it possible to utilize without typical difficulty associated with separation of nanoparticles from solution. In this paper, the species of Prussian blue analogue composites and the reaction mechanism in terms of crystallography, reaction kinetics, adsorption isotherms and thermodynamic are introduced in detail. We hope to provide references for related research.