摘要
研究了用三氯化铁改性的沸石在水中的除氟性能,对使用条件及除氟机理进行了研究.并对洗脱、再生后的吸附剂进行吸附柱实验.结果表明,该吸附剂对含氟水中的氟具有吸附容量高、速度快、选择性高、易洗脱再生的特性.多次洗脱再生后的吸附剂可重复使用,吸附剂性能稳定,吸附剂机械强度高.该吸附剂的静态饱和吸附容量可达26 57mg(F-) g(吸附剂).
Removing fluorine from water by the zeolite changed with FeCl_3 is discussed. The mechanism is studied and the condition of use are set up. Then the saturated absorbent stripped and regenerated with FeCl_3 and buffer solution was to continue column experiment. The results showed that, bycomparison with other absorbents, the absorption capacity of the absorbent is larger in removing fluoride ion from water including fluoride. While, high_selectivity to fluoride ion in water and easily stripping were showed in experiments. Specially, after the regeneration of 6 times,the mean saturation capacity of this absorbent is up to 15.63mg/g on contion of the influent of 20.98(mg/L). The static saturation absorbing capacity is 26.57mg/g.
出处
《汉中师范学院学报》
2004年第3期57-60,共4页
Journal of Hanzhong Teachers College
关键词
沸石
氟
吸附
三氯化铁
改性
Zeolite
Fluorine
absorption
Ferric chloride
change model
