改性沸石脱氟剂去除水中氟离子的实验研究

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了再吸附实验。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 ,机械强度高。该 F-吸附剂的静态饱和吸附容量可达 2 6.5 7mg/g。

Study on removing fluorine from water with zeolite changed by Fe( Ⅲ ) ion

Removing fluorine from water by the zeolite changed with FeCl 3 is discussed.The mechanism is studied and the condition of use is set up.Then the saturated absorbent stripped and regenerated with FeCl 3 and buffer solution was to continue column experiment.The results showed that, by comparing with other absorbents, the absorption capacity of absorbent is large in remov-ing fluoride ion from water including fluoride when high-selectivity to fluoride ion in water and easily stripping were showed in experiments. Specially, after the regeneration of 6 times, the meaning saturation capacity of this absorbent is up to 15.63 mg/g on contion of the influent of 20.98 mg/L.F- static saturation absorbing capacity is 26.57 mg/g.