Aggregation, settling characteristics and destabilization mechanisms of nano-particles under different conditions
文献类型：期刊论文
| 作者 | Jiao, Ruyuan ; Sun, Hongyan; Xu, Shengming; He, Yi; Xu, Hui; Wang, Dongsheng
|
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-06-25 |
| 卷号 | 827期号:0页码:154228 |
| 关键词 | RESIDUAL ALUMINUM COAGULATION SILICA NANOPARTICLES BEHAVIOR SIZE STABILITY TOXICITY |
| ISSN号 | 0048-9697 |
| 英文摘要 | An abundance of nano-particles have been exposed to water environment. Owing to the particle size effects, nano particles are inclined to absorb harmful substances and increase their levels of toxicity. In this study, the existence state, aggregation and settlement characteristics of nano-particles in the natural water are studied. Influenced by the structural layer repulsion, nano-particles have higher stability in natural water. When coagulants were added, nano particles could effectively aggregate with slow flocculation speed and relatively small flocs size without hydraulic shearing due to the significant effect of Brownian motion. It is worth noting that the aggregated flocs formed by Brownian motion showed high strength and strong ability to resist hydraulic disturbance, and thus the flocs were harder to break. This is because the combination among nano-particles under hydraulic shearing is the result of a single-point chain-to-chain aggregation mode, while that under the Brownian motion is the result of multi-points face-to-face aggregation mode. Therefore, in the process of re-flocculation, flocs formed by the Brownian motion were more compact. This study provides a new view in nano-particles treatment for both the in-situ treatment process of natural water body and the regular water treatment plants. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47673]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | Jiao, Ruyuan |
| 作者单位 | 1.Foshan Univ, Sch Environm & Chem Engn, Foshan 528000, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Yangtze River Delta Branch, Yiwu City 322000, Zhejiang, Peoples R China 4.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiao, Ruyuan,Sun, Hongyan,Xu, Shengming,et al. Aggregation, settling characteristics and destabilization mechanisms of nano-particles under different conditions[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,827(0):154228. |
| APA | Jiao, Ruyuan,Sun, Hongyan,Xu, Shengming,He, Yi,Xu, Hui,&Wang, Dongsheng.(2022).Aggregation, settling characteristics and destabilization mechanisms of nano-particles under different conditions.SCIENCE OF THE TOTAL ENVIRONMENT,827(0),154228. |
| MLA | Jiao, Ruyuan,et al."Aggregation, settling characteristics and destabilization mechanisms of nano-particles under different conditions".SCIENCE OF THE TOTAL ENVIRONMENT 827.0(2022):154228. |
入库方式： OAI收割
来源：生态环境研究中心
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