Assessment of EDTA heap leaching of an agricultural soil highly contaminated with heavy metals
文献类型：期刊论文
| 作者 | Hu, Pengjie1; Yang, Bingfan1; Dong, Changxun2; Chen, Like1; Cao, Xueying1,3; Zhao, Jie1,2; Wu, Longhua1; Luo, Yongming4 ; Christie, Peter1
|
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2014-12-01 |
| 卷号 | 117页码:532-537 |
| 关键词 | Agricultural soil Amendment Column leaching Ecological risk EDTA Field leaching |
| ISSN号 | 0045-6535 |
| 产权排序 | [Hu, Pengjie; Yang, Bingfan; Chen, Like; Cao, Xueying; Zhao, Jie; Wu, Longhua; Christie, Peter] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Dong, Changxun; Zhao, Jie] Nanjing Agr Univ, Nanjing 210095, Jiangsu, Peoples R China; [Cao, Xueying] Hunan Normal Univ, Changsha 410006, Hunan, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 通讯作者 | Wu, LH (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. lhwu@issas.ac.cn |
| 中文摘要 | The efficiency of heavy metal removal from soil by EDTA leaching was assessed in a column leaching experiment at the laboratory scale and field heap leaching at the pilot scale using a sandy loam sierozem agricultural soil contaminated with Cd, Cu, Pb, and Zn. Soil amendment and aging were conducted to recover leaching soils. The percentages of Cd, Cu, Pb, and Zn removed by column leaching were 90%, 88%, 90%, and 67%, respectively, when 3.9 bed volumes of 50 mM EDTA were used. At the pilot scale, on-site metal removal efficiencies using the selected leaching procedure were 80%, 69%, 73% and 62% for Cd, Cu, Pb and Zn, respectively. EDTA leaching decreased soil CEC, total P, total K and available K concentrations but increased organic matter and total Kjeldahl N concentrations. The subsequent amendment and soil aging further reduced the DTPA-extractable heavy metals in the leached soils. Growth of the first crop of pak choi in the leached soil was inhibited but the second crop grew well after the soil was aged for one year and the concentrations of Cd and Pb in the edible parts were below the Chinese statutory limits. The results demonstrate the potential feasibility of the field leaching technique using EDTA combined with subsequent amendment and soil aging for the remediation of heavy metal-contaminated agricultural soils. (C) 2014 Elsevier Ltd. All rights reserved. |
| 英文摘要 | The efficiency of heavy metal removal from soil by EDTA leaching was assessed in a column leaching experiment at the laboratory scale and field heap leaching at the pilot scale using a sandy loam sierozem agricultural soil contaminated with Cd, Cu, Pb, and Zn. Soil amendment and aging were conducted to recover leaching soils. The percentages of Cd, Cu, Pb, and Zn removed by column leaching were 90%, 88%, 90%, and 67%, respectively, when 3.9 bed volumes of 50 mM EDTA were used. At the pilot scale, on-site metal removal efficiencies using the selected leaching procedure were 80%, 69%, 73% and 62% for Cd, Cu, Pb and Zn, respectively. EDTA leaching decreased soil CEC, total P, total K and available K concentrations but increased organic matter and total Kjeldahl N concentrations. The subsequent amendment and soil aging further reduced the DTPA-extractable heavy metals in the leached soils. Growth of the first crop of pak choi in the leached soil was inhibited but the second crop grew well after the soil was aged for one year and the concentrations of Cd and Pb in the edible parts were below the Chinese statutory limits. The results demonstrate the potential feasibility of the field leaching technique using EDTA combined with subsequent amendment and soil aging for the remediation of heavy metal-contaminated agricultural soils. (C) 2014 Elsevier Ltd. All rights reserved. |
| 学科主题 | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | ELECTROCHEMICAL TREATMENT ; WASHING SOLUTION ; GARDEN SOIL ; EXTRACTION ; IMMOBILIZATION ; REMEDIATION ; RECOVERY ; COPPER ; ZN ; DISSOLUTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000347263300075 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/8684]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China 2.Nanjing Agr Univ, Nanjing 210095, Jiangsu, Peoples R China 3.Hunan Normal Univ, Changsha 410006, Hunan, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Pengjie,Yang, Bingfan,Dong, Changxun,et al. Assessment of EDTA heap leaching of an agricultural soil highly contaminated with heavy metals[J]. CHEMOSPHERE,2014,117:532-537. |
| APA | Hu, Pengjie.,Yang, Bingfan.,Dong, Changxun.,Chen, Like.,Cao, Xueying.,...&Christie, Peter.(2014).Assessment of EDTA heap leaching of an agricultural soil highly contaminated with heavy metals.CHEMOSPHERE,117,532-537. |
| MLA | Hu, Pengjie,et al."Assessment of EDTA heap leaching of an agricultural soil highly contaminated with heavy metals".CHEMOSPHERE 117(2014):532-537. |
入库方式： OAI收割
来源：烟台海岸带研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。