蛇纹石吸附含氟地下水试验研究

以辽宁阜新含氟地下水为研究对象,采用室内静态试验方法,进行了蛇纹石吸附含氟地下水试验研究。结果表明,对于氟离子质量浓度5 mg/L的200 m L含氟地下水,在反应温度30℃,pH值为6.0,反应时间为2 h,振荡速度为150 r/min条件下,400 mg蛇纹石对氟离子吸附效果最佳,吸附容量可以达到2.326 mg/g,对氟离子去除率达到95.49%。蛇纹石对氟离子的吸附较好地符合Freundlich吸附等温模型,吸附过程符合准二级动力学模型。

Experimental Study on Adsorption of Fluoride Groundwater by Serpentine

Taking the fluorine-containing groundwater in Fuxin city of Liaoning province as study object, and fluorine-containing groundwater was studied by the indoor static test method. The experimental study was carried out on the adsorption of fluoride groundwater by serpentine. The results show that, the 200 mL fluorine-containing groundwater with fluorine concentration of 5 mg/L, at temperature 30℃, pH value6.0, reaction time for 2 h, the oscillation rate was 150 r/min, the adsorption capacity of serpentine to fluoride ion can reach 2.326 mg/g and the removal rate was 95.49%. The adsorption process of serpentine on F- is in good agreement with the Freundlich adsorption isotherm model and the adsorption process accords with quasi-second-order kinetics model.