Effects of pH on leaching behavior of compacted cement solidified/stabilized lead contaminated soil
文献类型：期刊论文
| 作者 | Wang, Ping; Xue, Qiang ; Li, Jiang-Shan; Zhang, Ting-Ting
|
| 刊名 | ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
 |
| 出版日期 | 2016 |
| 卷号 | 35期号:1页码:149-155 |
| 关键词 | stabilization solidification lead leaching effective diffusion coefficient leachability index |
| ISSN号 | 1944-7442 |
| DOI | 10.1002/ep.12218 |
| 英文摘要 | The compacted cement stabilized/solidified (S/S) metal contaminated soil could be used for controlled utilization, such as road base, quarry rehabilitation, and lagoon closure. However, the complexity and variability of environment, especially the acid rain and alkaline leachate, greatly influence the leaching behaviors of S/S heavy metal contaminated soil and threaten the environment. The leaching characteristics of the compacted S/S samples were investigated over a wide range of pH (2.65, 3.65, 5.00, 7.00, and 10.00). Semidynamic leaching tests were conducted to evaluate the effects of pH on effectiveness and controlling leaching mechanism of compacted cement S/S treated lead (Pb) contaminated soil. Results showed that there was no obviously change of the cumulative fraction of Pb leached (CFL) in weak acid or weak alkaline conditions (pH ranging from 5.00 to 10.00), and the strong acid significantly altered the leaching behaviors of Pb. The calculated values of effective diffusion coefficient (De) and leachability index (LX) indicated that the mobility of Pb2+ was weak and the compacted S/S treatment could be used for controlled utilization with environment pH value ranging from 3.65 to 10.00. Especially, the LX value was 8.49 when the compacted S/S sample was immersed in the leachant with pH 2.65, indicated that the S/S sample was not considered appropriate for disposal. The mechanism controlling Pb2+ leaching from S/S samples at all the pH range (2.65-10.00) appeared to be diffusion, and with pH decreasing in acid conditions, the controlling leaching mechanism somehow was changing from diffusion to surface wash-off. (c) 2015 American Institute of Chemical Engineers Environ Prog, 35: 149-155, 2016 |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000368696100019 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3801]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Wang, Ping,Xue, Qiang,Li, Jiang-Shan,et al. Effects of pH on leaching behavior of compacted cement solidified/stabilized lead contaminated soil[J]. ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY,2016,35(1):149-155. |
| APA | Wang, Ping,Xue, Qiang,Li, Jiang-Shan,&Zhang, Ting-Ting.(2016).Effects of pH on leaching behavior of compacted cement solidified/stabilized lead contaminated soil.ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY,35(1),149-155. |
| MLA | Wang, Ping,et al."Effects of pH on leaching behavior of compacted cement solidified/stabilized lead contaminated soil".ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY 35.1(2016):149-155. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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