稀土元素在水体除氟中的应用及进展

水环境中的氟污染已被认为是全球严重威胁人类健康的主要问题之一,吸附法被认为是最具有发展前景的水体除氟技术,各国学者也在研发吸附性强和环境友好的新型吸附剂。对稀土化合物和负载稀土元素的吸附剂在除氟中的应用进行了总结,发现稀土化合物的吸附氟能力强,多金属氧化物、生物材料、金属有机骨架和硅基材料等经负载稀土元素改性后制备的新型吸附剂也表现出良好的除氟能力;不同材料和官能团的协同作用可以有效提高吸附剂的除氟能力。在总结现有除氟剂的基础上,对新型除氟吸附剂的研发进行了展望。

Application and progress of rare earth elements in fluoride removal from water

Abstract: Fluorine pollution in water environment has been considered to be one of the main problems threatening human health worldwide. Adsorption method is considered to be the most promising technology for water fluoride removal. Scholars around the world are developing new adsorbents with strong adsorption and environmental friendliness. The application of rare earth compounds and adsorbents loaded with rare earth elements in fluoride removal are summarized. It is found that the rare earth compounds have a strong ability to adsorb fluorine, and the new adsorbents prepared by modified rare earth elements such as multi-metal oxides, biological materials and metal organic frameworks show a good ability in fluoride removal. The synergistic effect of different materials and functional groups can effectively improve the fluoride removal ability of the adsorbent. On the basis of summarizing the existing fluoride removal agents, the research and development of new adsorbents are prospected.