磷矿脱镁废水中Mg^(2+)的离子交换动力学研究

Ion-exchange kinetics of Mg^(2+) from demagging waste solution of phosphate ore

用对数经验模型描述了磷矿脱镁废水中Mg2+在001×7×7型强酸铵型离子交换树脂上的有限浴离子交换动力学,Mg2+-NH4+交换过程属扩散控制,Mg2+的表观反应级数为0.70,活化能为23.99kJ/mol.

A work was taken to study the ion exchange kinetics with changing bulk concentration of removing Mg^(2+) from the demagging waste liquor of phosphate ore. A logarithmic empirical model was used to study the ion exchange kinetics on 001×7×7 ion exchange resin. The exchange processes are controlled by ion diffusion. The apparent reaction order of Mg^(2+) is 0.70 and the activation energy is 23.99 kJ/mol.