钠型斜发沸石对高钙苦卤中钾离子的吸附研究

Adsorption behaviors of Na-Y Clinoptilolite(Na-Y-C)to K+from the bittern containing high Ca2+were investigated.It was found that Na-Y-C also showed satisfactory adsorption selectivity to K+in the bittern containing high Ca2+.The influences of pH,temperature and initial concentration on the adsorption of K+were remarkable.At pH 6.0 and 20℃,adsorption rate of Na-Y-C to K+was 85.96%.The adsorption rate of K+was decreased with the increase of temperature.And the adsorption capacity of K+was increased with the increase of initial concentration of K+.Adsorption column could easily be regenerated by 0.1mol/L HCl and saturated sodium chloride solution after adsorption of K+.And that be reused in production process.Thus Na-Y-C can be used as a adsorbent for recovery K+from the bitter containing high Ca2+.

Na型斜发沸石上Na^+-Cu^(2+)离子交换过程动力学

用静态离子交换法研究了Na型斜发佛石上ZNa＋＝Cu2＋离子交换动力学，分别测定了液膜扩散常数R、粒内扩散系数D和滞留时间τd。实验发现，离子交换起始为液膜扩散控制，随后在交换的大部分时间内为拉内扩散控制．并就温度、浓度对离子交换过程速率、Cu2＋平衡交换数量以及滞留时间的影响进行了讨论。