载Fe(Ⅲ)配位体交换棉纤维吸附剂在去除饮用水中氟离子的应用  

THE REMOVAL OF FLUORIDE IN DRINKING WATER BY THE NOVEL BEAD Fe(Ⅲ)-LOADED LIGAND EXCHANGE COTTON CELLULOSE ADSORBENT

作　　者：赵雅萍[1] 王军锋[1] 陈甫华[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071

出　　处：《环境化学》2003年第1期64-68,共5页Environmental Chemistry

基　　金：国家自然科学基金 (批号 :2 99770 1 0 );天津市自然科学基金 (批号 :993 60 4 1 1 1 )资助项目

摘　　要：采用载Fe配位体交换棉纤维吸附剂 (Fe(Ⅲ )LECCA)对用自来水加氟化钠配制成的含氟水进行柱实验 ,并对洗脱、再生后的吸附剂进行再吸附柱实验 .结果表明 ,该吸附剂对去除饮用水中的氟离子具有工作吸附容量大、吸附速率快、选择性高、易洗脱再生的特性 .出水各项主要指标符合饮用水标准 (GB 5 749— 85 ) .多次洗脱、再生、再吸附后 ,吸附性能稳定 ,吸附剂机械强度高 .该吸附剂工作吸附容量可达 1 2 442mg·g- 1 ,相对标准偏差在 6The novel bead Fe(Ⅲ)LECCA,which was prepared was used to treat the tap water dosed fluoride ion through adsorption column.Then,the saturated adsorbent stripped and regenerated with 0.6mol·l -1FeCl 3 and buffer solution was to continue column experiment.The results showed that,by comparison with other adsorbents,the adsorption capacity of the adsorbent is larger in removing fluoride ion in drinking water,at the same time,high-selectivity to fluoride ion in drinking water and easily stripping were showed in expriments.Specially,after the regeneration of 8 times,the mean saturation capacity of this adsorbent is up to 12.442mg·g -1 on condition of the influent of 20.45mg·l -1and the relative standard deviation is below 6%.

关 键 词：载Fe(Ⅲ)配位体交换棉纤维吸附剂 饮用水 氟离子 吸附剂 

分 类 号：O647.3[理学—物理化学]