| 甲基叔丁基醚在饱和黏土中吸附和迁移参数的测定 |
| |
| 引用本文： | 刘涉江,姜斌,黄国强,李鑫钢.甲基叔丁基醚在饱和黏土中吸附和迁移参数的测定[J].天津大学学报(自然科学与工程技术版),2006,39(12):1470-1474. |
| |
| 作者姓名： | 刘涉江 姜斌 黄国强 李鑫钢 |
| |
| 作者单位： | [1]天津大学化工学院,天津300072 [2]天津大学精馏技术国家工程研究中心,天津300072 |
| |
| 摘 要： | 为描述有机污染物在土壤多孔介质中的迁移过程，采用静态间歇实验和动态土柱实验对甲基叔丁基醚（MTBE）在饱和黏土中的吸附和迁移特性进行了研究．静态吸附结果表明，MTBE在不同黏土中的吸附行为均可用线性方程描述，黏粒含量是土壤对MTBE吸附的主要影响因素．动态迁移实验中，借用反函数变化思路，提出利用实际渗流速度v确定非保守性物质在介质中纵向弥散系数DL和阻滞系数Rd的方法．与间歇实验相比，动态土柱法得到的Rd较小，仅为1．004，预示受到污染的土壤对MTBE几乎没有任何截留和净化能力．由此确定建立的数学模型和参数，为今后MTBE污染的土壤和地下水的治理研究提供一定的参考．
|
| 关 键 词： | 甲基叔丁基醚 吸附 弥散系数 阻滞系数 |
| 文章编号： | 0493-2137（2006）12-1470-05 |
| 收稿时间： | 2006-03-08 |
| 修稿时间： | 2006-03-082006-08-31 |
Measurement of Adsorption Characteristic and Transport Parameters of Methyl Tert-Butyl Ether in Saturated Clayey Soil |
| |
| LIU She-jiang,JIANG Bin,HUANG Guo-qiang,LI Xin-gang.Measurement of Adsorption Characteristic and Transport Parameters of Methyl Tert-Butyl Ether in Saturated Clayey Soil[J].Journal of Tianjin University(Science and Technology),2006,39(12):1470-1474. |
| |
| Authors: | LIU She-jiang JIANG Bin HUANG Guo-qiang LI Xin-gang |
| |
| Institution: | 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2. National Engineering Research Centre for Distillation Technology, Tianjin University, Tianjin 300072 |
| |
| Abstract: | For describing the dynamic transport of organic compounds in porous medium,the batch and soil column experiments were performed to investigate the adsorption characteristic and transport parameters of methyl tert-butyl ether(MTBE) in saturated clayey soil.The results indicate that linear equations can describe the adsorption behavior of MTBE in different clays,and the clay content in the test soil is the key factor influencing the adsorption capability.A method is put forward according to the principle of inverse function conversion,which can be used to calculate the longitudinal dispersive coefficient(D_L) and retardation coefficient(R_d) of the test medium by utilizing factual flow rate of solution.The value of R_d obtained from soil column experiment is lower than that from the batch experiment,and is only 1.004,indicating that the soil used in this study can hardly retard and purify MTBE.The mathematic model and parameters can provide basis for the remediation of soil and groundwater contaminated by MTBE. |
| |
| Keywords: | methyl tert-butyl ether adsorption dispersive coefficient retardation coefficient |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
