纯凹凸棒石吸附Cu^(2+)的实验研究

Experimental Study of Adsorption of Cu^(2+) of Pure Palygorskite

从凹凸棒石提纯入手,进行了纯凹凸棒石吸附Cu2+的实验研究。结果表明,纯凹凸棒石对水中Cu2+的吸附性能主要受振荡速度、吸附时间和溶液pH值等因素影响。纯凹凸棒石对Cu2+的等温吸附曲线同时符合Langmuir和BET方程。在本实验条件下,纯凹凸棒石对水中的Cu2+ (20mL,Cu2+浓度均为50mg·L-1 )的最佳吸附工艺条件为:振荡速度150r·min-1,吸附时间60min,吸附剂用量0 100g,溶液pH5 2,此条件下去除率达到100%。

The experiment has been done to investigate the adsorption of Cu^(2+) of palygorskite based on purification of palygorskite clay ,the result indicates that the adsorption is mainly affected by such factors as vibrating rate , adsorption time,aqueous pH, and the adsorption curve(30℃) of Cu^(2+) on palygorskite confirms with Langmuir equation or BET equation . In this study, the optimized technological conditions are vibrating rate 150 r·min^(-1), adsorption time 60 min , and pH5.2.The corresponding removal efficiency of Cu^(2+) is 100%。