中文摘要：

以KCl为钾源、新疆某地所产斜发沸石为吸附剂，研究斜发沸石对K^＋的动力吸附与解吸效果，并探讨吸附时间、K^＋初始浓度与吸附量的关系。用PH=5的HCl溶液和（Ca^2＋Mg^2＋）浓度／（mmol·L^-1）为1．6，3．2，6．4，12．8，19．2，25．6的混合溶液对饱和吸附了K^＋的斜发沸石进行解吸，实验结果表明：沸石对K^＋的吸附在4min能达到最大吸附率的96％，30min内达到平衡。Langmuir吸附等温式能对吸附曲线进行很好的描述。单位质量沸石对K^＋的最大吸附量为44．53×10^-3以阳离子交换吸附为主。pH-5的HCl溶液对K^＋的解吸量最小，随解吸溶液中（Ca^2＋Mg^2＋）浓度增加，解吸滞后系数减小，解吸速率远小于吸附速率。解吸量的自然对数与解吸时间的自然对数呈现明显的线性关系，用指数方程对（Ca^2＋Mg^2＋）浓度为25．6mmol／L的解吸曲线进行拟合，R=0．998，拟舍方程为qt=3．890t^0.210。理论上将吸附的K^＋全部解吸出来需要74．4d。

英文摘要：

The clinoptilotite occurred in Xinjiang is taken as adsorbent to study the effect of adsorption/desorption of clinoptilotite on K＋ and discuss the relation between amount of absorption and the absorption time as well as initial concentration of K^＋. Clinoptilotite adsorbed saturated K^＋ is desorbed by HCl solution（pH=5） and （Ca^2＋ ＋Mg^2＋） with concentration of 1.6,3.2,6.4, 12.8,19.2,25.6 mmol/L. It is showed that the absorption of clinoptilotite to K^＋ reaches 96% at 4 minutes,getting balanced within 30 minutes, and the amount of maximum absorption is 44.53 ）〈 10.3, dominant by cation absorption. When pH = 5, the amount of desorption of HCl to K^＋ reaches its minimum. The hysteresis coefficients decreases as the concentration of （Ca^2＋ ＋Mg^2＋） increases, and the desorption rate is much lower than absorption rate. The natural logarithm of desorption quantity is linearly proportional to desorption time. The desorption curve with a （Ca^2＋ ＋ Mg^2＋） concentration of 25.6 mmol/L is matched by exponent equation and obtain a fitting equation of q, = 3. 890t^0.210 with R = 0. 998. Theoretically, it takes 74. 4 days to desorb all adsorbed K^＋.