金属基吸附剂除氟研究进展

Research Progress on Fluorine Removal by Metal-based Adsorbents

水体氟污染问题日益严重。目前,针对含氟水体的处理方法有离子交换法、电渗析法、混凝法、膜过滤法、吸附法等。在众多除氟方法中,吸附法具有操作简单、吸附效果好、成本低、不产生或很少产生二次污染等优点。吸附法最关键的因素是吸附剂。对各类吸附剂的优缺点比较发现,金属基吸附剂吸附速率快、吸附容量大、选择性好。对金属基吸附剂的种类、吸附机理、除氟效果等方面展开综述。开发更高性能的吸附剂仍然是今后研究工作的重点方向。

The problem of fluoride pollution in water body is becoming more and more serious. Recently, fluoride-containing water treatment methods include ion exchange, electrodialysis, coagulation, membrane filtration, and adsorption et al. Among the many methods of fluoride removal, adsorption has the advantages of simple operation, good efficiency, low cost, no or little secondary pollution and so on. The most key factor of the adsorption is the adsorbent. Based on the comparison of the advantages and disadvantages of various types of adsorbents, it is found that the metal-based adsorbents have a fast adsorption rate, large adsorption capacity and good selectivity. This work reviewed the types of metal-based adsorbents, adsorption mechanism and adsorption capacity and so on. Developing higher performance adsorbent is still the focus of future research.