D296R阴离子交换树脂吸附氰化物的物理化学研究  

Study on Physiochemistry of Cyanide Adsorption by D296R Anion Exchange Resin

作　　者：何敏[1] 朱国才[2] 兰新哲[3] 

机构地区：[1]西安建筑科技大学冶金工程学院 [2]清华大学 [3]西安建筑科技大学

出　　处：《金属矿山》2004年第12期62-65,共4页Metal Mine

基　　金：国家 8 63计划资助项目 (编号 :2 0 0 3AA3 2X0 90 )

摘　　要：测定了D2 96R强碱性阴离子交换树脂对氰化物的吸附速率常数 ,绘制了吸附等温线 ,并推导出吸附过程的热力学函数。系统考察了酸度、温度、溶液中氰化物含量、时间及树脂用量对氰化物吸附的影响。确定D2 96R湿树脂的静态饱和吸附量为 2 7.5 8mg/mL ,吸附本质为物理吸附。实验结果表明 ,该树脂具有吸附速度快、受温度影响小、吸附容量大等优点 。The adsorption rate of cyanide on D296R alkaline anion exchange resin was measured, the adsorption isotherm drawn and the thermodynamic function of the adsorption process deduced. The effect of acidity, temperature, cynide concentration, adsorption time and resin dosage on cyanide adsorption was systematically investigated. It was determined that the static saturated adsorption capacity of wet D296R resin was 27.58 mg/mL and the adsorption was of physical nature. The test results show that the resin has advantages of rapid adsorption, little temperature influence and high adsorption capacity and is good for recovering cyanide.

关 键 词：阴离子交换树脂 氰化物 强碱性 吸附过程 物理化学 饱和吸附量 吸附容量 吸附速率 回收 物理吸附 

分 类 号：TD971.9[矿业工程—选矿] X703[环境科学与工程—环境工程]