Adsorption Ability of Geosynthetic Clay Liner to Cations and Organics in Landfill Leachate
详细信息
- 责任者：Xu Chao (Key Laboratory of Geotechnical and Underground Engineering ; Ministry of Education ; Tongji University ; Shanghai 200092 ; China) ; Qi Changwei
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2011
- 卷期：38(3)
- 关键词：膨润土 ; bentonite ; 垃圾处置 ; refuse disposal ; 土工合成材料 ; geotechnical synthetic materials
- 页码：p.77-81
- 图表：3 illus., 2 tables, 13 refs.
- 分类号：1800
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
The adsorption ability of geosynthetic clay liner (GCL) and its variation were explored through test and analysis of chemical compositions in the landfill leachate before and after permeation. The results were demonstrated by X-ray fluorescence spectrometry analysis. It was found that GCL’s adsorption to most of cations and organics occurred during the permeation process of landfill leachate through GCL. The results also indicate that the absorption ability was strong at the beginning of permeation, but gradually decreased until a saturation of adsorption was reached. Thus an anti-seepage barrier of low hydraulic conductivity, which does not absorpt to harmful ions and organic matter, is the key quality of GCL.