利用天然斜发沸石从高离子强度的强碱性溶液中吸附和洗脱K^+和Rb^+的研究  

STUDY ON THE EXCHANGE AND ELUTION OF POTASSIUM AND RUBIDIUM FROM A HIGH ION INTENSITY AND STRONG ALKALINE SOLUTION BY NATURAL CLINOPTILOLITE

作　　者：谢冠群[1] 卢雁[1] 周建国[1] 高世扬[1] 

机构地区：[1]河南师范大学化学与环境科学学院,新乡453002

出　　处：《离子交换与吸附》2002年第2期150-155,共6页Ion Exchange and Adsorption

摘　　要：在80℃下,用间歇法研究NH4+ 型天然斜发沸石对某厂高离子强度的强碱性循环液中的K+ 和Rb+ 的吸附,得到不同粒度天然斜发沸石对K+ 和Rb+ 的交换吸附量。用不同浓度的NH4HCO3溶液对沸石进行洗脱再生,得到洗脱速率随着洗脱液浓度增大而增大。本文对沸石与钾含量很高的高离子强度强碱性溶液中碱金属的交换吸附和洗脱过程进行了初步探讨。At 80℃, Potassium and Rubidium in the recycled liquid with high ion intensity and strong alkaline solution which was taken from an aluminum plant were exchanged with the natural clinoptilolite. The dynamic exchange capacity of Potassium and Rubidium on NH4+-clinoptilolite has been determined. When the K,Rb-clinoptilolite was regenerated by ammonium hydrogen carbonate solutions in different concentrations, potassium and rubidium would be always eluted from the natural clinoptilolite column at the same time. The elutive rate increases with increasing of the elution concentration. The process of the exchange and elution in the given conditions was discussed at last.

关 键 词：天然斜发沸石 离子交换吸附 洗脱 K^+ Rb^+ 强碱性溶液 钾(Ⅰ) 铷(Ⅰ) 吸附 分离 钾肥 铵肥 

分 类 号：TQ440.6[化学工程—化学肥料工业] O647.3[理学—物理化学]