|
|||||
|
|
| 过硫酸钠对砂壤土中三氯乙烯的氧化研究 | |
| 引用本文： | 蔡信德,吴嘉怡,杜文婷,李荣飞,李诗殷,杨子江.过硫酸钠对砂壤土中三氯乙烯的氧化研究[J].中国环境科学,2012,32(7):1263-1267. |
| 作者姓名： | 蔡信德 吴嘉怡 杜文婷 李荣飞 李诗殷 杨子江 |
| 作者单位： | 1. 环境保护部华南环境科学研究所,广东广州,510655 2. 广州市番禺区环境保护局第二环境保护所,广东广州511400;环境保护部华南环境科学研究所,广东广州510655 3. 华南师范大学生命科学学院,广东广州510631;环境保护部华南环境科学研究所,广东广州510655 |
| 基金项目： | 国家环境保护公益科研专项 |
| 摘 要： | 以过硫酸钠(Na2S2O8)为氧化剂,柠檬酸(CA)螯合Fe(Ⅱ)溶液作为活化剂,对砂壤土中的三氯乙烯(TCE)进行处理.采用正交试验获得优化操作条件为: Na2S2O8浓度5mmol/L,Fe(Ⅱ)浓度2.5mmol/L,CA浓度0.25mmol/L,反应时间30min.在此条件下,土壤中不同浓度的TCE去除率均在93%以上.对于污染程度高的土壤,采用连续氧化处理可达到较高的修复目标要求.土柱实验结果表明经过Na2S2O8溶液氧化7d后,TCE氧化率达到88.9%以上,且去除效果与处理方式有关,分次加入方式的效果最好. |
| 关 键 词： | 过硫酸钠 Fe(Ⅱ) 柠檬酸 氧化 三氯乙烯(TCE) |
| 收稿时间： | 2011-11-01; |
Removal efficiency of trichloroethylene from the contaminated sandy loam soil using sodium persulfate |
|
| CAI Xin-de , WU Jia-yi , DU Wen-ting , LI Rong-fei , LI Shi-yin , YANG Zi-jiang.Removal efficiency of trichloroethylene from the contaminated sandy loam soil using sodium persulfate[J].China Environmental Science,2012,32(7):1263-1267. | |
| Authors: | CAI Xin-de WU Jia-yi DU Wen-ting LI Rong-fei LI Shi-yin YANG Zi-jiang |
| Institution: | 1(1.South China Institute of Environmental Sciences,Ministry of Environmental Protection,Guangzhou 510655,China;2.The Second Institute of Envionmental Protection,Panyu Environmental Protection Bureau of Guangzhou,Guangzhou 511400,China;3.College of Life Science,South China Normal University,Guangzhou 510631,China) |
| Abstract: | To investigate the removal efficiency of trichloroethylene(TCE) in sandy loam,the oxidant of sodium persulfate(Na2S2O8) and activating agent of citrate acid(CA) chelated with ferrous iron(Fe Ⅱ) were wsed.The orthogonal test showed that the removal efficiency of TCE was over 93% with different TCE treatments under the optimized experimental condition consisting of 5 mmol/L of Na2S2O8,2.5 mmol/L of Fe(Ⅱ) and 0.25 mmol/L CA with 30 min of reaction time.For soil with higher TCE level,sequential oxidation treatment could remove more contaminant.In addition,results from soil column experiments showed that: more than 88.9% of TCE was oxidized by Na2S2O8 after 7 d;and the removal rate of TCE was relevant to the way of Na2S2O8 addition which sequential addition could achieved the best efficiency. |
| Keywords: | sodium persulfate Fe(Ⅱ) citric acid oxidation trichloroethylene(TCE) |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《中国环境科学》浏览原始摘要信息 | |
| 点击此处可从《中国环境科学》下载免费的PDF全文 | |