GUO Xuying^a,b,XING Jingwei^b,FU Saiou^b,JIANG Guoliang^b,DONG Yanrong^c

(a.College of Science;b.College of Mining;c.College of Civil Engineering, Liaoning University of Engineering and Technology,Fuxin 123000,China)

Abstract:Fe-Al,Cr-Al and La-Al pillared montmorillonites were prepared from natural Na-montmorillonite in the proportion of n (total metal cations)/m (montmorillonite)=10 mmol/g,and characterized by means of chemical element analysis,X-ray diffraction analysis,infrared spectrum analysis,etc.then,the adsorption properties and influencing factors of each pillared montmorillonite to Cu2+ heavy metal ions in water were studied.The results show that the interlayer spacing d(001) of Cr-Al pillared montmorillonite increases from 12.406 1 nm to 19.764 9 nm,and the pillared effect is better than that of Fe-Al and La-Al pillared montmorillonite.At 60 ℃,pH=6,and 12 h of reaction time,the removal rate of Cu2+ ion is the highest when the amount of 12.0 g/L is added,and the adsorption effect of Cr-Al pillared montmorillonite is better than that of Fe-Al and La-Al pillared montmorillonite.

Keywords:pillared agent;pillared montmorillonite;adsorption properties

中图分类号：TB4;X52                             文献标志码：A

文章编号：1008-5548(2020)05-0022-06

DOI:10.13732/j.issn.1008-5548.2020.05.004

收稿日期： 2020-03-10，修回日期：2020-04-01，在线出版时间：2020-07-08 14:59。

基金项目：国家自然科学基金项目，编号：51304114;41672247；辽宁省科学技术研究资助项目，编号：LJ2017FAL016。

第一作者简介：郭旭颖(1977—)，女，硕士生导师,副教授，研究方向为矿山环境工程。E-mail：17466685@qq.com。

通信作者简介：邢经纬(1995—)，男，硕士研究生，研究方向为矿山环境工程。E-mail：23928118232@qq.com。