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| 有机质对土壤气相抽提去除四氯化碳效率的影响 | |
| 引用本文： | 卢中华,裴宗平,鹿守敢,王岩,胡佳佳,闫姗. 有机质对土壤气相抽提去除四氯化碳效率的影响[J]. 环境科学与技术, 2011, 34(6): 20-23. DOI: 10.3969/j.issn.1003-6504.2011.06.005 |
| 作者姓名： | 卢中华 裴宗平 鹿守敢 王岩 胡佳佳 闫姗 |
| 作者单位： | 1. 中国矿业大学江苏省资源环境信息工程重点实验室;中国矿业大学环境与测绘学院,江苏徐州221116 2. 徐州市环境保护科学研究所,江苏徐州,221116 3. 中国矿业大学环境与测绘学院,江苏徐州,221116 |
| 基金项目： | 国家自然科学基金资助项目(40373044) |
| 摘 要： | 某重要岩溶地下水源地因附近农药厂排放含四氯化碳污水而受到严重污染,实验采用土柱通风试验模拟土壤气相抽提(SVE),研究环境温度为20℃,通风速率为40mL/min,土壤含水率10%,而土壤有机质含量分别为3.02%和0.13%条件下的两种供试土壤中四氯化碳污染物的去除过程.结果表明,土柱通风能有效去除土壤中的四氯化碳污... |
| 关 键 词： | 有机质 土壤气相抽提 四氯化碳 动力学 反应速率常数 |
Tetrachloride from Soils by Soil Vapor Extraction |
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| LU Zhong-hua,PEI Zong-ping,LU Shou-gan,WANG Yan,HU Jia-jia,YAN Shan. Tetrachloride from Soils by Soil Vapor Extraction[J]. Environmental Science and Technology, 2011, 34(6): 20-23. DOI: 10.3969/j.issn.1003-6504.2011.06.005 | |
| Authors: | LU Zhong-hua PEI Zong-ping LU Shou-gan WANG Yan HU Jia-jia YAN Shan |
| Affiliation: | LU Zhong-hua1,2,PEI Zong-ping1,2*,LU Shou-gan3,WANG Yan2,HU Jia-jia1,YAN Shan1,2(1.Jiangsu Key Laboratory of Resource and Environmental Information Engineering,China University of Mining and Technology,2.School of Environment and Spatial Informatics,Xuzhou 221116,China,3.Xuzhou Research Institute of Environmental Protection,China) |
| Abstract: | A main Karst groundwater supply source was polluted by carbon tetrachloride.Column-venting experiment was done to simulate soil vapor extraction in order to inquiry the removal of carbon tetrachloride from soil.Experiment was done at 20 ℃ with venting velocity of 40 mL/min,the two kinds of experimental soils moisture content were both 10%,but organic matter content were 3.02% and 0.13% respectively.Results showed that carbon tetrachloride can be effectively removed by ventilation.Removal of carbon tetrachloride in soil follows the first order reaction kinetics.There is a good linear relationship between lnC and temperature,with correlation coefficients above 0.95.When soil organic matter content is 3.02%,reaction rate constants of the removal of carbon tetrachloride are 0.013 2 h-1~0.015 5 h-1 in Column I.When soil organic matter content is 0.13%,the reaction rate constants are 0.017 1 h-1~0.020 6 h-1 in Column II,which showed that the removal efficiency of soil vapor extraction is related to soil organic matter content,soil with lower organic matter content has higher removal efficiency. |
| Keywords: | organic matter soil vapor extraction carbon tetrachloride kinetics reaction rate constant |
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