The Fuxin natural mordenites were modiifed by NaOH-Al2(SO4)3 then were used to remove lfuoride in the wastewater , the results were characterized by SEM, EDS and XRD. The adsorption process was dealed with the model of kinetics and thermodynamics, the results showed that: the effect of removing lfuoride has reached 94.7%, the adsorption process could be well described by the accurate secondary kinetic rate equation and the Freundlich isotherm adsorption model; some important thermodynamics functions such asΔG0<0,ΔH0<0 andΔH0<0 were calculated and all the negative value showed that adsorption process is spontaneous and exothermic.%对阜新天然丝光沸石进行NaOH-Al2(SO4)3改性，改性沸石用于高氟废水的除氟实验，并采用扫描电镜（SEM）、能谱（EDS）和X射线衍射（XRD）对样品的形貌进行了表征。分别用动力学和热力学模型对吸附过程进行了模拟，结果表明：改性沸石的除氟效果达到94.78%，吸附过程接近准二级动力学速率方程，且Freundlich等温线吸附模型能较好地模拟吸附热力学过程；由吸附过程的热力学函数吉布斯自由能ΔG 0＜0，焓变ΔH 0＜0，熵变ΔS 0＜0，表明吸附过程属于自发的和放热的。
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