类水滑石材料在核废水处理领域的应用

Layered Double Hydroxides as Sorbent for Remediation of Radioactive Wastewater

核能已成为我国能源结构的重要组成部分,但含放射性物质的废水所带来的危害不容忽视.如何高效解决核废水污染问题迫在眉睫.类水滑石材料是一类阴离子型粘土化合物,因其层板组成及层间阴离子种类的可调控性、较大的比表面积及粒径和形貌的可调控性等特点已在含放射性核素废水的处理中崭露头角.本文主要阐述了类水滑石材料对废水中放射性核素的吸附行为及其作用机制,探讨了存在的问题及可能的解决方法,并对其发展前景进行了展望.

Nuclear energy has become an important part of energy structure for our country,however,it is still a big challenge to settle the problems of radioactive wastewater.Layered double hydroxides(LDHs)is a kind of anionic clay materials,which have been attracted much attention in the treatment of radionuclide-containing wastewater due to its controllable composition,adjustable anionic types,large specific surface area,tunable particle size and morphology.In this paper,we mainly focused on the adsorption behavior and mechanism of LDHs for radioactive wastewater.Besides,several key challenges in using LDHs as sorbents for capture of radioactive ions are presented.We hope that this work could shed light on the sustainable development of LDHs as amendment for radioactive waste⁃water in future.