二混蜜中钾在离子交换柱上的吸附性质及动力学

摘要

通过考察溶液温度、质量浓度及树脂粒径对K＋在树脂上静态交换过程的影响,研究BK001型离子交换树脂对二混蜜中造蜜剂K＋的吸附性质及动力学。结果表明：在温度分别为303K和333K时,BK001型离子交换树脂对K＋吸附行为符合Langmuir吸附等温方程;交换过程主要受颗粒扩散控制,表观活化能为35.1kJ/mol,反应级数为1.389,表观频率因子为8439min-1。%Adsorption properties and kinetics for of the removal of K+ from mother liquor B on BK001 type ion exchange resin were investigated by studying the effects of temperature,concentration and resin particle size on K+ static exchange.At 303 K and 333 K,the adsorption behavior of K+ on the resin obeyed Langmuir isothermal adsorption.The exchange process was mainly dominated by particle diffusion;the apparent activation energy was 35.1 kJ/mol,the reaction order was 1.389,and the apparent frequency factor was 8439 min-1.