【摘要】 制备四种改性蒙脱石 ,并利用X射线衍射分析和化学成分分析方法对其进行了表征 ,选用其中两种对水中的氟离子进行了吸附试验 ,通过正交实验确定了它们吸附氟离子的适宜条件及吸附等温线 ( 2 5℃ )。结果表明 ,制备的改性蒙脱石具有很强的吸附氟离子的能力 ,在pH分别为 5和 4时的除氟效果最好 ,吸附等温线符合Freundlich型吸附等温线方程。更多还原

【Abstract】 Four kinds of modified montmorillonites were prepared and characterized by means of X\|ray powder diffraction and elemental analysis. Experiments were made on removal fluoride from aqueous solutions with two of the four samples (Mt and HMt). The optimum fluoride\|absorbing conditions and adsorption isotherms of these two samples were investigated in detail. The results show that Mt and HMt have very large fluoride\|absorption capacities and can absorb fluoride best at pH=5 and 4, respectively. Their absorption isotherms are of the Freundlich\|type.更多还原