改性膨润土对水中有机物的吸附  

Absorption of organic pollutants from wastewater by modified-bentonite

作　　者：邝应林[1] 何少华[1] 李昕[1] 凌静[1] 

机构地区：[1]南华大学城市建设学院,湖南衡阳421001

出　　处：《水资源与水工程学报》2011年第1期134-137,共4页Journal of Water Resources and Water Engineering

摘　　要：简述了膨润土的结构及其性质,归纳了膨润土的改性特点及改性方法,其主要改性方法有活化法和添加剂改性法,总结了几种改性膨润土对水中有机物的吸附效果,其中有机膨润土和复合改性膨润土吸附能力较强,其对水中有机污染物的去除率最高分别可达99.6%及99%,另外,分析了改性膨润土的吸附机理,概述了吸附的影响因素及吸附等温式,并展望了改性膨润土的应用前景。The structure and property of bentonite were explained in this paper.The characteristic of bentonite and several modifying methods were reviewed.The main modification methods included activation method and additives modification method.In addition,the absorption effects of organic pollutants from wastewater by several kinds of modified-bentonite were summarized,in which the organic bentonite and compound modification bentonite had stronger adsorption with the highest removal rate of 99.6% and 99%,respectively.The adsorption mechanisms and rules were dissertated as well.What＇s more,the influences and the isotherms on the adsorption of modified-bentonite were discussed,and applying prospect of modified-bentonite in wastewater treatment were also presented.

关 键 词：改性膨润土 有机污染物 吸附 

分 类 号：X703[环境科学与工程—环境工程]