改性膨润土吸附重金属离子的研究与应用进展  

Study on the adsorption of heavy metals with modified bentonite and its applied progress

作　　者：徐媛媛[1] 辛晓东[1] 郑显鹏[1] 于海琴[1] 闫良国[1] 杜斌[1] 

机构地区：[1]济南大学化学化工学院,山东济南250022

出　　处：《工业水处理》2009年第5期1-4,共4页Industrial Water Treatment

基　　金：国家自然科学基金项目(20577016);山东省自然科学基金资助项目(Y2006B36)

摘　　要：膨润土具有很强的吸附能力,通过对膨润土进行改性,可提高其对重金属离子的去除能力。国内外学者对改性膨润土用于含重金属离子污水的处理进行了广泛的研究。概述了膨润土改性制备方法和表征手段,讨论了影响改性膨润土吸附重金属离子的主要因素。对近年来国内外改性膨润土吸附水体中铬、镉、汞、铅、镍等重金属离子的应用研究进行了综述,并指出了改性膨润土用于重金属废水处理存在的问题和今后的研究方向。Bentonite has highly adsorptive capacity and through the modification of it, the removal capacity of heavy metal ions can be improved. The modified bentonite applied to the treatment of the wastewater containing heavy metal ions by the scholars both in China and abroad has been studied. The preparation and characterization methods of bentonite are reviewed. The main factors affecting the adsorption of heavy metals are discussed. The research progress on the adsorption of heavy metals, such as Cr^6＋, Cd^2＋, Hg^2＋, Pb^2＋, Ni^2＋ etc., from water by the modified bentonite is summarized. At the end, the existing problems in the treatment of heavy metal wastewater with modified bentonite and future research directions are put forward.

关 键 词：改性膨润土 重金属 吸附 

分 类 号：X703.1[环境科学与工程—环境工程]