微波改性锆-铝柱撑膨润土对水中Cr(Ⅵ)的吸附  

Adsorption of Cr(Ⅵ) from Water on Zirconium-Aluminum Pillared Bentonite Modified by Microwave Radiation

作　　者：唐艳葵[1] 韦科陆[2] 童张法[2] 龙敏[2] 

机构地区：[1]广西大学环境学院,广西南宁530004 [2]广西大学化学化工学院,广西南宁530004

出　　处：《化工环保》2011年第1期1-4,共4页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金资助项目(20766001)

摘　　要：以膨润土为原料,通过微波辐射加热法制备锆-铝柱撑膨润土(MZAPB)吸附剂,研究了MZAPB加入量、溶液pH、吸附时间、温度等因素对Cr(Ⅵ)吸附效果的影响。研究结果表明:当溶液初始Cr(Ⅵ)质量浓度为25mg/L、MZAPB加入量为10g/L、溶液pH为5.6、吸附温度25℃、吸附时间为60 min时,Cr(Ⅵ)的去除率可达到98%以上;MZAPB对含Cr(Ⅵ)模拟废水具有较好的处理效果且在60 min内达到Cr(Ⅵ)吸附平衡;吸附等温线可以用Langmuir方程进行较好的拟合。The zirconium-aluminum pillared bentonite （MZAPB） adsorbent was prepared from bentonite by microwave heating, and its effects on Cr （ Ⅵ） adsorption were studied. The results show that： When the initial Cr（Ⅵ） mass concentration is 25 mg/L, the MZAPB dosage is 10 g/L, the solution pH is 5.6, the adsorption temperature is 25℃ and the adsorption time is 60 rain, the Cr （ Ⅵ ） removal rate is over 98% ; The treatment effect of the simulated Cr（Ⅵ） -containing wastewater is good and the Cr（Ⅵ） adsorption equilibrium can be achieved in 60 rain; The adsorption isotherm is accordant with Langmuir equation.

关 键 词：微波辐射 锆-铝柱撑膨润土 吸附 铬(Ⅵ) 

分 类 号：X703[环境科学与工程—环境工程]