Hydrophilicity/hydrophobicity of metal sulfide particles as a determinator of aggregation performance in wastewater
文献类型：期刊论文
| 作者 | Xia, Zhilin; Peng, Xianjia; Kong, Linghao ; Hu, Xingyun
|
| 刊名 | JOURNAL OF WATER PROCESS ENGINEERING
 |
| 出版日期 | 2021-04 |
| 卷号 | 40页码:- |
| 关键词 | Metal sulfide particles Hydrophilicity Hydrophobicity Aggregation Density functional theory |
| ISSN号 | 2214-7144 |
| 英文摘要 | Differences in aggregation performance of metal sulfide particles generated in wastewater during sulfide pre-cipitation processes cannot be adequately explained by their zeta potentials. Herein, different aggregation per-formances among CuS, CdS and As2S3 particles produced by sulfide precipitation in strongly acidic wastewater were found to depend on the different hydrophilicity/hydrophobicity of these particles. Density functional theory (DFT) calculation revealed the mechanism of hydrophobicity/hydrophilicity of the metal sulfide particles, which verified the hydrophobic particles preferred to self-aggregate, whereas the hydrophilic particles were more likely to bind to H2O molecules and disperse in wastewater. Metal sulfide particles generated under different conditions also have different hydrophilicity/hydrophobicity and on which the aggregation perfor-mances of the particles depend. It was confirmed that the different aggregation performances among CuS, CdS and ZnS particles generated in low-pH wastewater were also determined by their different hydrophilicity/hy-drophobicity rather than their zeta potentials. This study explains the reason of different aggregation perfor-mances among precipitates produced by sulfide precipitation in wastewater. Additionally, this study has revealed that, in strongly acidic wastewater, the tiny and hydrophilic metal sulfide particles were difficult to be separated by settling and coagulation method, which provides an instruction to further study for the downstream sepa-ration process of the metal sulfide particles formed by sulfide precipitation. |
| WOS研究方向 | Engineering, Environmental ; Engineering, Chemical ; Water Resources |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45948]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Beijing Key Lab Ind Wastewater Treatment & Resour, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Zhilin,Peng, Xianjia,Kong, Linghao,et al. Hydrophilicity/hydrophobicity of metal sulfide particles as a determinator of aggregation performance in wastewater[J]. JOURNAL OF WATER PROCESS ENGINEERING,2021,40:-. |
| APA | Xia, Zhilin,Peng, Xianjia,Kong, Linghao,&Hu, Xingyun.(2021).Hydrophilicity/hydrophobicity of metal sulfide particles as a determinator of aggregation performance in wastewater.JOURNAL OF WATER PROCESS ENGINEERING,40,-. |
| MLA | Xia, Zhilin,et al."Hydrophilicity/hydrophobicity of metal sulfide particles as a determinator of aggregation performance in wastewater".JOURNAL OF WATER PROCESS ENGINEERING 40(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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