摘要
膨润土是一种非常重要的防渗材料,在垃圾填埋场的建造和使用中,膨润土也是常用的材料,故探讨膨润土的吸附作用是研究其防渗能力的工作之一。研究表明;垃圾填埋场渗滤液中相对含量较高的有机污染物为烟碱,一旦进入土壤和水体会破坏生态平衡,而目前我国常用的处理方法就是铺设防渗垫层,而防渗垫层中常用的防渗材料就是膨润土。采用烟碱作为吸附质。天然钠基膨润土作为吸附剂,进行吸附试验。结果表明:1)烟碱在膨润土颗粒之间的吸附是通过矿物质的表面吸附作用来实现的,作用力较弱且吸附效果较差;2)未经改性处理的膨润土对烟碱的吸附量有限且不稳定。
Bentonite is a very important anti-seepage material.In the construction and use of landfill,Bentonite is also a commonly used material,so the study of Bentonite adsorption is one of the work to study its anti-seepage ability.The study shows that the relatively high content of organic pollutants in Landfill Leachate is nicotine,which will destroy the balance of nature once it enters the soil and water body and the common impervious material in the impervious cushion is the Bentonite.Nicotine was used as adsorbate in this paper.Natural na-bentonite was used as adsorbent to carry out adsorption test.The results show that:1)The adsorption of nicotine between Bentonite particles is realized by the surface adsorption of minerals,the force is weak and the adsorption effect is poor;2)The adsorption of nicotine on the unaltered bentonite is limited and unstable.
作者
高秀
黄璐
黄紫琪
Gao Xiu Huang Lu Huang Ziqi(Southwest Petroleum?University,School of Earth Science and Technology,ChengduSichuan 601500)
出处
《云南化工》
CAS
2019年第12期44-45,50,共3页
Yunnan Chemical Technology
关键词
膨润土
烟碱
吸附
Bentonite
Nicotine
adsorption
作者简介
高秀(1995-),女,硕士研究生,四川成都,研究方向:烟碱在膨润土中的吸附性能研究。
