Clinoptilolite (CL) has been sonochemically modified by using NaCl solution and applying a 35 kHz ultrasound in 30 min and at 60 ${}^{\mathrm{o}}$C. The modified clinoptlolite (SNa-CL) has been characterized by X-ray diffraction (XRD), laser scattering, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and nitrogen adsorption/desorption isotherms. Results showed that the sonochemical modification process could reduce particle size, enhance effective cation exchange capacity from 0.10 to 1.58 meq/g, and enlarge the surface area of CL from 31.14 to 37.25 m²/g The cadmium removal efficiency of the modified CL was optimized using response surface methodology (RSM) with central composite design (CCD). Under the optimal condition with pH of 6.3, the contact time of 309 min, Cd initial concentration of 79.41 mg/L, and SNa-CL dosage of 7.02 g/L, the removal efficiency reached 99%. The adsorption kinetics was obeyed the second-order model and controlled by multiple steps. The adsorption isotherms were well fitted to the Langmuir model and the maximum adsorption capacity at different temperatures was more than 20 mg/L. The thermodynamic study showed that the adsorption of Cd onto SNa-CL was a spontaneous, endothermic, and physical-chemical process. The results in this work suggested that the sonochemical modification is a potential method for fabricating effective and low-cost adsorbents from natural resources.

斜发沸石（CL）已通过使用NaCl溶液进行声化学改性，并在30分钟和60分钟内施加35 kHz超声 ${}^{\mathrm{Ø}}$C.改性斜发沸石（SNa-CL）已通过X射线衍射（XRD），激光散射，扫描电子显微镜（SEM），能量色散X射线光谱（EDS）和氮吸附/解吸等温线进行了表征。结果表明，声化学改性过程可将粒径减小，有效阳离子交换容量从0.10增至1.58 meq / g，CL的表面积从31.14扩大至37.25 m ²/ g使用响应表面方法（RSM）和中央复合材料设计（CCD）优化了改性CL的镉去除效率。在最佳pH值为6.3，接触时间为309 min，Cd初始浓度为79.41 mg / L，SNa-CL剂量为7.02 g / L的最佳条件下，去除率达到99％。吸附动力学服从二阶模型并由多个步骤控制。吸附等温线非常适合Langmuir模型，不同温度下的最大吸附容量超过20 mg / L。热力学研究表明，镉在SNa-CL上的吸附是自发的，吸热的和物理化学过程。