Comparison of extractants for removing heavy metals and metalloids from contaminated soil of the iron and steel work site
文献类型：SCI/SSCI论文
| 作者 | Lei M.; Yang J. |
| 发表日期 | 2012 |
| 关键词 | iron and steel work site heavy metals soil washing extractant citric-acid edta pb sediments zn remediation |
| 英文摘要 | The study presented in this paper dealt with the washing of a soil polluted with iron and steel production activities. The soil was rich in heavy metals and metalloids (Pb, Zn, Cd, As). Soil was washed with deionized water, 0.5 mol.L-1 hydrochloric acid, 0.5 mol.L-1 nitric acid, 0.5 mol.L-1 Citric acid, 0.5 mol.L-1 Acetic acid, 0.5 mol.L-1 Oxalic acid and 0.1 mol.L-1 EDTA. High extraction efficiency was achieved with respect to EDTA and hydrochloric acid. The nitric acid was proven to be effective with respect to Pb, Zn and Cd, while it was proven to be less effective with respect to As. The acetic acid was proven to be effective with respect to Zn, while it was proven to be problematic with respect to Pb, Cd and As. Citric acid was effective with respect to Pb and Zn, problematic with respect to Cd and As. Oxalate was proven to be problematic with respect to Pb, Zn, and Cd, less effective than EDTA and hydrochloric acid with respect to As. Mobilization of Pb, Zn, Cd and As under deionized water effect was minimal indicated that the metal fraction that is weakly bound to soil particles is insignificant. The high As content in the soil necessitated further treatment. Overall, the study showed that the use of one extractant was not effective in removing all types of metal, a sequential washing procedure using different extractants may be needed for the safety reuse of the site. |
| 出处 | Disaster Advances |
| 卷 | 5 |
| 页 | 99-104 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0974-262X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26866]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Lei M.,Yang J.. Comparison of extractants for removing heavy metals and metalloids from contaminated soil of the iron and steel work site. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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