改性亚氨基膦酸树脂的制备与除氟性能研究

以亚氨基膦酸树脂为骨架,经浸渍螯合吸附锆,构建了以锆为中心离子的配体交换材料,具有吸附除氟性能。结果表明,在含氟5~40 mg/L的溶液中,除氟剂对氟（F-）吸附去除率可达99.23%;在起始浓度为10~2 000 mg/L的含氟溶液中,树脂对氟的饱和吸附量为34.36 mg F-/g;水中常见共存离子对树脂吸附除氟无影响,表现出该种材料对氟吸附的高度选择性。

Study on preparation of modified imino phosphonate acid resin and its performance of remove of fluorine

Using imino phosphonate acid resin as the matrix material,the zirconium is diped,chelated and adsorbed on this material. The center of zirconium ion ligands center is got,and the properties of fluoride is obtained. The results show that this material has good capability of defluorination. In the fluorine-containing water of 5 ~40 mg/L concentration,defluorination rate is up to 99. 23%. When the initial concentration of fluoride solution from 10 ~ 2 000 mg/L,the saturated adsorption capacity of fluoride is 34. 36 mg F-/g. Other hands,the test result shows as well,common-ions in water do not make affect to adsorbing fluor ions by imino phosphonate acid chelate resin and high selection in process of removing flourine has been demonstrated.