硅胶载体除氟剂的性能研究

以层析硅胶为载体,以活性氧化铝和活性氧化镁为吸附质制备出了两种载体型除氟剂。在相似条件下,前人研究活化沸石除氟剂的动态除氟容量为0.98 mg/g,本实验制备的两种除氟剂的动态除氟容量分别为1.00 mg/g和1.72 mg/g,明显高于文献值。对实验室制备的硅胶/活性氧化铝和硅胶/活性氧化镁除氟剂的除氟性能进行了测试,测试分析了高氟水溶液中的常规离子SO42-、Cl-、Ca2 和Mg2 等对自制除氟剂的除氟容量的影响,表明这两种除氟剂有较好的抗干扰性。对比了高氟矿泉水的除氟数据,制备的除氟剂具有良好的除氟效果,为进一步制备除氟容量更高、抗干扰能力更强的除氟剂,提供了依据。

Study on fluoride removal performance of silica/activated alumina and ailica /activated magnesia

Using silica as carrier,activated alumina and activated magnesia as sorbent,two kinds of fluoride-removal materials were prepared.Orthogonal design was used to develop the best preparation steps.The fluoride removal capacity of silica/activated alumina and silica /activated magnesia was measured.Under the same conditions,the fluoride removal capacity of activated zeolite was 0.98 mg/g reported by prior researchers,but the fluoride-removal capacities of these two kinds of fluoride-removal materials were 1.00 and 1.72 mg/g respectively.The resistance to interference by SO42-,Cl-,Ca2 and Mg2 were tested.The new fluoride removal materials had high resistance to interference by ions and high fluoride removal capacity.