Anisotropic gypsum scaling of corrugated polyvinylidene fluoride hydrophobic membrane in direct contact membrane distillation
文献类型：期刊论文
| 作者 | Hu, Jiaqi2,3; Harandi, Hesam Bazargan1,3; Chen, Yecang4; Zhang, Liwei1,3; Yin, Huabing4; He, Tao2,3 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 244页码:10 |
| 关键词 | Membrane distillation Surface pattern Scaling Superhydrophobic Anisotropic |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2023.120513 |
| 英文摘要 | Membrane distillation (MD) technology has gained a lot of attention for treatment of geothermal brine, high salinity waste streams. However, mineral scaling remains a major challenge when treating complex high-salt brines. The development of surface-patterned superhydrophobic membranes is one of the core strategies to solve this problem. We prepared flat sheet membranes (F-PVDF) and hydrophobic membranes with micron-scale corrugated pattern (C-PVDF) using a phase separation method. Their scaling behavior was systematically evaluated using calcium sulfate solutions and the impact of the feed flow was innovatively investigated. Although CPVDF shows higher contact angle and lower sliding angle than F-PVDF, the scaling resistance of C-PVDF in the perpendicular flow direction has worst scaling resistance. Although the nucleation barrier of the corrugated membrane is the same at both parallel and perpendicular flow directions based on the traditional thermodynamic nucleation theory, experimental observations show that the C-PVDF has the best scaling resistance in the parallel flow direction. A 3D computational fluid dynamics (CFD) model was used and the hydrodynamic state of the pattern membranes was assessed as a determinant of the scaling resistance. The corrugated membrane with parallel flow mode (flow direction in parallel to the corrugation ridge) induces higher fluid velocity within the channel, which mitigated the deposition of crystals. While in the perpendicular flow mode (flow direction in perpendicular to the corrugation ridge), the solutions confined in the corrugated grooves due to vortex shielding, which aggravates the scaling. These results shed light on the mechanism of scaling resistance of corrugated membranes from a hydrodynamic perspective and reveal the mechanism of anisotropy exhibited by corrugated membranes in MD. |
| 资助项目 | National Natural Science Foundation of China[21978315] ; National Natural Science Foundation of China[52011530031] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001076752800001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39497]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Liwei; He, Tao |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Chinese Acad Sci, Shanghai Adv Res Inst, Lab Membrane Mat & Separat Technol, Shanghai 201210, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Glasgow, James Watt Sch Engn, Glasgow G12 8LT, Scotland |
| 推荐引用方式 GB/T 7714 | Hu, Jiaqi,Harandi, Hesam Bazargan,Chen, Yecang,et al. Anisotropic gypsum scaling of corrugated polyvinylidene fluoride hydrophobic membrane in direct contact membrane distillation[J]. WATER RESEARCH,2023,244:10. |
| APA | Hu, Jiaqi,Harandi, Hesam Bazargan,Chen, Yecang,Zhang, Liwei,Yin, Huabing,&He, Tao.(2023).Anisotropic gypsum scaling of corrugated polyvinylidene fluoride hydrophobic membrane in direct contact membrane distillation.WATER RESEARCH,244,10. |
| MLA | Hu, Jiaqi,et al."Anisotropic gypsum scaling of corrugated polyvinylidene fluoride hydrophobic membrane in direct contact membrane distillation".WATER RESEARCH 244(2023):10. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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