离子交换分离磷矿脱镁废水中镁离子的动力学  

Kinetics of Separating Magnesium Ions from Demagging Liquor of Phosphate Ore by Ion Exchange

作　　者：文衍宣[1,2] 王励生[3] 金作美[3] 

机构地区：[1]华南理工大学材料学院 [2]广西大学化学化工学院,南宁530004 [3]四川大学化工学院

出　　处：《过程工程学报》2003年第6期523-527,共5页The Chinese Journal of Process Engineering

摘　　要：用动边界模型积分方程描述了0017树脂脱除磷矿脱镁废水中的Mg2+的有限浴交换动力学,得到了动力学总方程. Mg2+的交换过程属颗粒扩散控制,表观活化能为24.11 kJ/mol,[Mg2+]的表观反应级数为1.0.An integrating equation of moving boundary model was used to describe the kinetics with changing bulk concentration of removing Mg2+ from demagging waste solution of phosphate ore by 0017 resins. The general kinetical equation was obtained. The ion exchange process of Mg2+ is controlled by ion diffusion through particles. The apparent activation energy is calculated to be 24.11 kJ/mol, and the apparent reaction order of Mg2+ is 1.0.

关 键 词：离子交换 分离 磷矿脱镁废水 镁离子 动力学 

分 类 号：X754[环境科学与工程—环境工程]