坡缕石对Zn^(2+)的吸附性能及吸附工艺条件优化研究  

The adsorption of Zn^(2+) on palygorskite and the optimization of the adsorption technological conditions

作　　者：彭书传[1] 黄川徽[1] 陈天虎[1] 杨远盛[1] 汪家权[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009

出　　处：《岩石矿物学杂志》2004年第3期282-286,共5页Acta Petrologica et Mineralogica

基　　金：国家自然科学基金资助项目 ( 4 0 0 72 0 17)

摘　　要：从坡缕石粘土提纯入手 ,进行了坡缕石吸附Zn2 + 的实验研究 ,结果表明坡缕石对水中Zn2 + 的吸附性能主要受振荡速度、吸附时间、溶液 pH值、吸附剂用量等因素影响 ,30℃时坡缕石对Zn2 + 的等温吸附曲线同时符合Lang muir方程和BET方程。在本实验条件下 ,坡缕石对水中的Zn2 + (2 0mL ,Zn2 + 浓度均为 5 0mg/L)的最佳吸附工艺条件为 :振荡速度 15 0r/min ,吸附时间 12 0min ,吸附剂用量 0 .12 0 g ,溶液pH为 6 .2 ,此条件下去除率达到了95 .5 %。The experiment has been done for adsorption of Zn^(2+) on palygorskite based on purification of palygorskite clay, the result shows that the adsorption is mainly affected by such factors as vibrating rate, adsorption time, amount of adsorbent and aqueous pH, and the adsorption curve (30℃) of Zn^(2+) on palygorskite conforms with Langmuir equation or BET equation. In this study, the optimized technological conditions are vibrating rate (150 r/min), adsorption time 120 min, amount of adsorbent 0.120 g, and pH 6.2. The corresponding removal efficiency of Zn^(2+) is 95.5%.

关 键 词：坡缕石 ZN^2+ 吸附 工艺优化 

分 类 号：P575.9[天文地球—矿物学] P578.964[天文地球—地质学]