国内外新型除氟材料的研究概述

Summary of research on new defluorination materials at home and abroad

含氟废水排放引起的氟污染备受人们关注。吸附法作为含氟废水处理有效方法之一,其技术关键在于吸附材料的开发研究。本文按照碳基吸附材料、金属吸附材料、改性沸石、生物吸附材料和工业废弃物等材料类型,总结了改性活性炭、羟基磷灰石、稀土金属材料、复合金属材料和改性壳聚糖等新型除氟材料的吸附效果;比较了各种除氟材料的优缺点;并分析了它们的吸附机理;最后提出了未来除氟吸附材料的重点研究方向。

Much attention has been paid to the fluorine pollution caused by the discharge of fluorine-containing wastewater。As one of the effective methods for fluorine-containing wastewater treatment,the key technology of adsorption method lies in the development of adsorption materials。According to the types of carbon based adsorption materials,metal adsorption materials,modified zeolite,biosorption materials and industrial waste,this paper summarizes the adsorption effects of new defluorination materials such as modified activated carbon,hydroxyapatite,rare earth metal materials,composite metal materials and modified chitosan。The advantages and disadvantages of various defluorination materials are compared,and the adsorption mechanism of fluoride removal materials is analyzed。Finally,the key research direction of defluorination material in the future is put forward.