Efficacy and microbial responses of biochar-nanoscale zero-valent during in-situ remediation of Cd-contaminated sediment
文献类型：期刊论文
| 作者 | Liu, Qunqun1,2; Sheng, Yanqing2 ; Wang, Wenjing2; Liu, Xiaozhu1,2
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| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2021-03-10 |
| 卷号 | 287页码:12 |
| 关键词 | Cadmium (Cd) Sediment immobilization Nanoscale zero-valent ion Biochar Bacterial communities |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2020.125076 |
| 通讯作者 | Sheng, Yanqing(yqsheng@yic.ac.cn) |
| 英文摘要 | In situ immobilization of heavy metals in sediments has been considered as a low-cost and eco-friendly remediation method. In this study, biochar (BC) and BC-nanoscale zero-valent iron composite (nZVI/BC) treatments with different doses were conducted to immobilize Cd in sediments in situ. The performance of BC and nZVI/BC in changing Cd mobility and bacterial community in sediment was investigated, and their remediation efficiencies at various pH values were also explored. After 140 d of remediation, the results showed that the application of BC and nZVI/BC reduced the released Cd concentrations in the overlying water and porewater by 31-69% and 26-73%, respectively. Compared to the control, the labile Cd in treated sediments was transformed to a stable fraction, and the TCLP (toxicity characteristic leaching produce) extracted Cd decreased by 7-29%. The reduction in Cd mobility was closely related to the additional dose of BC or nZVI/BC, and the presence of nZVI greatly enhanced the ability of nZVI/BC to stabilize Cd. Notably, nZVI/BC presented a higher restriction for Cd release from sediment than BC at various pH values, and both BC and nZVI/BC showed the highest remediation effects under alkaline condition. Bacterial community analysis indicated that the richness and diversity of bacterial communities with the low-dose treatments were enhanced, while inhibition was observed at high dose treatments due to changes in the pH and toxicity of BC and nZVI/BC. This study supplies new insights into the potential effects of BC and nZVI/BC application on Cd in situ immobilization in contaminated sediments. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS关键词 | DISSOLVED ORGANIC-MATTER ; RIVER SEDIMENTS ; STRAW BIOCHAR ; HEAVY-METALS ; COMMUNITY ; IMMOBILIZATION ; WATER ; SOIL ; BIOAVAILABILITY ; COMPOSITES |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[XDA23050203] ; Regional Key Project of STS of CAS[KFJ-STS-QYZX-057] ; Key Research and Development Program of Shandong Province[2019GSF109002] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000611894600001 |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Regional Key Project of STS of CAS ; Key Research and Development Program of Shandong Province |
| 源URL | [http://ir.yic.ac.cn/handle/133337/27414]  |
| 专题 | 烟台海岸带研究所_山东省海岸带环境工程技术研究中心 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 |
| 通讯作者 | Sheng, Yanqing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai Inst Coastal Zone Res, Yantai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Qunqun,Sheng, Yanqing,Wang, Wenjing,et al. Efficacy and microbial responses of biochar-nanoscale zero-valent during in-situ remediation of Cd-contaminated sediment[J]. JOURNAL OF CLEANER PRODUCTION,2021,287:12. |
| APA | Liu, Qunqun,Sheng, Yanqing,Wang, Wenjing,&Liu, Xiaozhu.(2021).Efficacy and microbial responses of biochar-nanoscale zero-valent during in-situ remediation of Cd-contaminated sediment.JOURNAL OF CLEANER PRODUCTION,287,12. |
| MLA | Liu, Qunqun,et al."Efficacy and microbial responses of biochar-nanoscale zero-valent during in-situ remediation of Cd-contaminated sediment".JOURNAL OF CLEANER PRODUCTION 287(2021):12. |
入库方式： OAI收割
来源：烟台海岸带研究所
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