Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Assessment of EDTA heap leaching of an agricultural soil highly contaminated with heavy metals | |
Hu, Pengjie1; Yang, Bingfan1; Dong, Changxun2; Chen, Like1; Cao, Xueying1,3; Zhao, Jie1,2; Wu, Longhua1; Luo, Yongming4 ; Christie, Peter1; Wu, LH (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. [email protected]
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| 发表期刊 | CHEMOSPHERE
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| ISSN | 0045-6535 |
| 2014-12-01 | |
| 卷号 | 117页码:532-537 |
| 关键词 | Agricultural Soil Amendment Column Leaching Ecological Risk Edta Field Leaching |
| DOI | 10.1016/j.chemosphere.2014.08.081 |
| 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 |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 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.; 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. |
| 文章类型 | Article |
| 资助机构 | Environmental Sciences & Ecology |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | ELECTROCHEMICAL TREATMENT ; WASHING SOLUTION ; GARDEN SOIL ; EXTRACTION ; IMMOBILIZATION ; REMEDIATION ; RECOVERY ; COPPER ; ZN ; DISSOLUTION |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000347263300075 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/8684 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 |
| 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. [email protected] |
| 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.,...&Wu, LH .(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. |
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