AES、SDS及复配溶液对镍污染土壤的淋洗研究  

Study on leaching of nickel contaminated soil by AES, SDS and compound solution

作　　者：唐冰 安燕[1] 白玉琦 汤钦元 宋方祥 刘延静 TANG Bing;AN Yan;BAI Yu-qi;TANG Qin-yuan;SONG Fang-xiang;LIU Yan-jing(College of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学化学与化工学院

出　　处：《应用化工》2020年第1期147-150,154,共5页Applied Chemical Industry

基　　金：贵州省科技计划项目(黔科合LH字[2017]7255);贵州大学科技合作项目(H160499)

摘　　要：以阴离子表面活性剂脂肪醇聚氧乙烯醚硫酸钠(AES)、十二烷基硫酸钠(SDS)溶液及其复配液为土壤淋洗剂,研究比较对模拟镍污染黄壤粘土的淋洗去除效果。结果表明,适宜复配溶液为SDS∶AES=4∶6(质量比);AES在40℃、质量浓度为2.5%、pH值为4、土水比1∶30条件下洗脱效果最佳,镍去除率可达82.84%,SDS∶AES=4∶6复配溶液与SDS去除效果稍弱于AES,去离子水效果最差;各表面活性剂溶液淋洗过程动力学模拟结果均符合准二级动力学方程。Uses anionic surfactants(fatty alcohol polyoxyethylene ether sulfate(AES),sodium dodecyl sulfate(SDS)and its compound solution)were regarded as soil eluent,study and compare with leaching removal effects on simulated nickel-contaminated yellow soil clay.The results showed that:the suitable compound solution was SDS∶AES=4∶6(mass ratio);AES had the best leaching effect at 40℃,mass concentration of 2.5%,pH value of 4,and soil-water ratio of 1∶30,nickel removal rate can reach 82.84%,SDS∶AES=4∶6 compound solution and SDS removal effect is slightly weaker than AES,deionized water had the worst effect.The kinetic simulation results of each surfactant solution leaching process are in accordance with the quasi-second-order kinetic equation.

关 键 词：镍污染土壤 表面活性剂 复配 淋洗 去除率 

分 类 号：TQ423.9[化学工程] X53[环境科学与工程—环境工程]