环境保护科学2024，Vol.50Issue(1)：104-109,6.DOI:10.16803/j.cnki.issn.1004-6216.202212026
活性炭-土-膨润土复合材料阻隔性能研究
Barrier performance of activated carbon-soil-bentonite composite
摘要
Abstract
Silty clay(SC)was used as the base soil,and the hydraulic conductivity and adsorption properties of soil-bentonite(SB)and activated carbon soil-bentonite(ASB)with different ratios under different leachate conditions were studied by flexible wall hydraulic conductivity test and static equilibrium adsorption test.The results showed that when Pb(NO3)2 solution was used as the percolate,the hydraulic conductivity of the unit increased gradually with the increase of Pb2+ concentration,and the hydraulic conductivity of SB decreased greatly with the increase of bentonite content and tended to be stable.The incorporation of bentonite and activated carbon could effectively enhance the adsorption performance of the material.With the increase of the concentration of the percolate,the adsorption capacity of SC,SB and ASB for Pb2+ increases,and the difference in adsorption capacity gradually increases.According to the comprehensive impervious performance and groundwater quality standard,the benchmark ratio of barrier materials to meet the remediation of heavy metal contaminated sites was proposed.The research results could provide a reference for the remediation and treatment of heavy metal contaminated sites.关键词
阻隔墙材料/土-膨润土/活性炭/渗透系数/静平衡吸附/基准配比Key words
cutoff walls/soil-bentonite/activated carbon/hydraulic conductivity/adsorption/standard ratio分类
资源环境引用本文复制引用
杨梦传,张志红,虞璐,王劲楠..活性炭-土-膨润土复合材料阻隔性能研究[J].环境保护科学,2024,50(1):104-109,6.基金项目
国家重点研发计划项目(2019YFC1803702) （2019YFC1803702）
