Effects of rape straw and red mud on extractability and bioavailability of cadmium in a calcareous soil
文献类型：SCI/SSCI论文
| 作者 | Yang J. X.; Wang, L. Q.; Li, J. M.; Wei, D. P.; Chen, S. B.; Guo, Q. J.; Ma, Y. B. |
| 发表日期 | 2015 |
| 关键词 | red mud rape straw cadmium immobilization calcareous soil heavy-metal immobilization sewage-sludge application contaminated soil amendments cd mobility zn cu growth copper |
| 英文摘要 | Screening of cost-effective soil amendments is important to develop "in situ" remediation techniques for cadmium (Cd) contaminated soils. In this study, different soil amendments, including red mud, a by-product of the alumina industry, and acid-treated, nano-treated by nanoparticle milling, nano and acid-treated red muds, zeolite, corn straw, and rape straw, were evaluated to immobilize Cd in two added levels (2 and 5 mg Cd center dot kg(-1) soil) in a calcareous soil by single and sequential extractions and by cucumber (Cucumis sativus L.) pot experiments. Results indicated that cruciferous rape straw significantly decreased the concentrations of water soluble, extractable Cd in soils, and Cd in cucumber plants, and it was more effective than gramineous corn straw. Also, red mud generally decreased the extractability and bioavailability of Cd added to calcareous soils more effectively than zeolite. Furthermore, the efficiency of red mud could be increased by the treatment of nano-particle milling due to the increase in specific surface area of red mud. It is potential to use rape straw and red mud as soil amendments to develop a cost-effective and efficient "in situ" remediation technology for Cd mildly contaminated calcareous soils. |
| 出处 | Frontiers of Environmental Science & Engineering |
| 卷 | 9 |
| 期 | 3 |
| 页 | 419-428 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 2095-2201 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38510]  |
| 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 | Yang J. X.,Wang, L. Q.,Li, J. M.,et al. Effects of rape straw and red mud on extractability and bioavailability of cadmium in a calcareous soil. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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