Y Revealing the brick-laying process of foulants layer in membrane distillation for desulfurization wastewater treatment: Insight into the mineral scaling
文献类型：期刊论文
| 作者 | Zheng, Libing ; Liu, Mengmeng; Li, Chenlu; Kang, Sai; Chen, Meixue; Zhong, Hui; Wang, Jun; Wei, Yuansong
|
| 刊名 | DESALINATION
 |
| 出版日期 | 2021-03-15 |
| 卷号 | 500页码:- |
| 关键词 | Membrane distillation Mineral scaling Membrane fouling mechanism Brick-laying Desulfurization wastewater |
| ISSN号 | 0011-9164 |
| 英文摘要 | Mineral scaling is one key obstacle to membrane distillation (MD) in hypersaline wastewater desalination, but the scaling and fouling mechanism are poorly understood. Addressing this challenge required revealing the foulants layer formation process. In this study, MD was applied for flue gas desulfurization wastewater treatment with a plug flow module, aims at unfolding the foulants accumulation process into three dimensions (3D) space as the flow velocity had significant influence on foulants distribution. Hence, validated offline method was used to detect the formation of foulants layer by SEM-EDS-FTIR-XPS. Mineral scaling was the key fouling mechanism, and the fouling tendency increased along the flow pass by brick-laying process. Hexagonal CaSO4, primarily in the form of alpha-calcium sulfate hemihydrate, and lamellate Mg-Si complexes are the leading foulants, acting as bricks during the layer-by-layer manufacturing process of scalants. The pioneering foulant, structured by organic matters and Mg-Si complexes, was the key incipient foulant and acted as concrete. Heterogeneous nucleation is the primary crystallization mechanism for CaSO4, whereas Mg-Si complexes was formed in bulk. The brick-laying process sheds light on the distribution and formation of mineral scaling and membrane fouling in MD, which can be extended to other membrane desalination processes. |
| WOS研究方向 | Engineering, Chemical ; Water Resources |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46086]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Dept Water Pollut Control Technol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Libing,Liu, Mengmeng,Li, Chenlu,et al. Y Revealing the brick-laying process of foulants layer in membrane distillation for desulfurization wastewater treatment: Insight into the mineral scaling[J]. DESALINATION,2021,500:-. |
| APA | Zheng, Libing.,Liu, Mengmeng.,Li, Chenlu.,Kang, Sai.,Chen, Meixue.,...&Wei, Yuansong.(2021).Y Revealing the brick-laying process of foulants layer in membrane distillation for desulfurization wastewater treatment: Insight into the mineral scaling.DESALINATION,500,-. |
| MLA | Zheng, Libing,et al."Y Revealing the brick-laying process of foulants layer in membrane distillation for desulfurization wastewater treatment: Insight into the mineral scaling".DESALINATION 500(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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