摘要
通过土柱实验对比,研究了Cu^2+在高岭土中单一离子运移、两种离子同时运移、两种离子顺序运移时Cu^2+的吸附特性,并与Batch试验的结果进行对比分析,结果表明,在初始浓度、pH相同的条件下,各土柱深度土样对Cu^2+的吸附量均比Batch试验小;运移试验中Cu^2+的单层饱和吸附量Q会随着土层深度的增大而逐渐减小;竞争运移会使高岭土对Cu^2+的吸附量减少;先用Pb2+后用Cu^2+进行顺序运移时,Cu^2+的吸附量显著减少,顺序运移<同时运移<单一离子运移.综合分析不同情况下运移时的Cu^2+在高岭土中吸附特性.
The adsorption characteristics of Cu^2+in the kaolin in the single ion transport,the simultaneous transport of two ions,and the sequential transport of the two ions were studied by soil column experiments.The results of the Cu^2+adsorption were compared with the results of the Batch test.The results show that:Under the conditions of the same initial concentration and the same pH,the adsorption amount of Cu^2+in the soil samples of each soil column is smaller than that of the Batch test.The single-layer saturated adsorption amount Q of Cu^2+in the migration test will gradually decrease with the increase of soil depth.The competitive migration will reduce the adsorption of Cu^2+by kaolin.When using Pb2+first and then using Cu^2+for sequential migration,the adsorption amount of Cu^2+is significantly reduced,and the sequential migration<simultaneous migration<single ion migration;The adsorption characteristics of Cu^2+in kaolin during migration under different conditions is comprehensively analyzed.
作者
徐阳阳
艾英钵
范志浩
沙学军
XU Yangyang;AI Yingbo;FAN Zhihao;SHA Xuejun(Geotechnical Engineering Department,Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China)
出处
《河南科学》
2019年第11期1790-1795,共6页
Henan Science
基金
中央高校基本科研业务费专项资金（2015B17714）
关键词
CU^2+
Batch试验
土柱实验
顺序竞争
吸附特性
Cu^2+
Batch test
soil column experiment
sequential competition
adsorption characteristics
