Advances in the Efficient Removal of the Key Radioactive Nuclide 90 Sr Using Crystalline Ion-exchange Materials: A Review.

Abstract

Nuclear energy, a rapidly evolving clean energy source, generates significant amounts of radioactive waste-including radioactive nuclides cesium (Cs+), strontium (Sr2+) and uranyl (UO22+). In recently, ion exchange have been deemed as one of the ideal methodologies to deal with this problem. Therefore ion-exchange materials emerged as a hot topic in contemporary research. This review encapsulates the latest advancements in the removal of pivotal radioactive ions Sr2+ utilizing ion exchange materials. It provides a comprehensive overview of the structures and properties of distinct categories of ion exchange materials, elucidating their ion exchange characteristics and probing the intricate interplay between structure and properties. Key considerations addressed include identifying cations most amenable to exchange within interlayer channels, assessing the impact of channel dimensions on material efficacy, and strategies for enhancing the ion exchange capabilities of intercalation compounds. These factors are crucial for achieving superior selectivity and rapid adsorption kinetics in ion exchange processes.