Ultrafiltration membrane fouling by microplastics with raw water: Behaviors and alleviation methods
文献类型：期刊论文
| 作者 | Li, Jingyi; Wang, Bodong; Chen, Zhihao; Ma, Baiwen; Chen, J. Paul |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2021-04-15 |
| 卷号 | 410页码:- |
| ISSN号 | 1385-8947 |
| 关键词 | Ultrafiltration Microplastics Raw Water Fouling behaviors Fouling alleviation |
| 英文摘要 | It is well accepted that microplastics (MPs) exist in freshwater that is used as a key source for production of drinking water. Because of the potential health effects from MPs, it is necessary to remove the MPs during the water treatment. Among various technologies, membrane technology plays a dominant role. The integrated ultrafiltration membrane-based system has attracted considerably high attention for water treatment due to its cost-effectiveness. In this study, the ultrafiltration (UF) membrane fouling by the MPs was investigated. The results indicated that the UF membrane fouling was enhanced due to the synergistic effect of MPs and the existing substance in raw water. The transmembrane pressure (TMP) was positively correlated with the loading of MPs; the MPs with an averaged size of 1 mu m caused the most severe fouling among the tested sizes. The aluminum-based flocs (Al-flocs) were injected and the loose cake layers were formed on the membrane surface, leading to a reduction in the TMP by almost 85% at the Al-flocs total dosage of 26 mM. A further fouling alleviation was achieved by the membrane module reciprocating rotation or helical rotation, which regulated the thickness of the loose cake layers. The three-dimensional computational fluid dynamics (CFD) modeling analysis indicated the flow in the tank was in the transition from laminar flow to turbulent flow. The results also showed that the shear stress had the maximum value when the module started to rotate regardless of the rotation duration, indicating the main regulation induced at the beginning of the rotation. In this work, the findings illustrated how MPs practically affect the UF membrane fouling and advocated the applicability of the dynamic integrated process to alleviating the fouling caused by the MPs. |
| WOS研究方向 | Engineering, Environmental ; Engineering, Chemical |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46273]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 作者单位 | 1.Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Xian 710055, Peoples R China 2.Natl Univ Singapore, Dept Civil & Environm Engn, 10 Kent Ridge Crescent, Singapore 119260, Singapore 3.Natl Univ Singapore, NUS Environm Res Inst, 5A Engn Dr 1, Singapore 117411, Singapore 4.Chinese Acad Sci, Key Lab Drinking Water Sci & Technol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jingyi,Wang, Bodong,Chen, Zhihao,et al. Ultrafiltration membrane fouling by microplastics with raw water: Behaviors and alleviation methods[J]. CHEMICAL ENGINEERING JOURNAL,2021,410:-. |
| APA | Li, Jingyi,Wang, Bodong,Chen, Zhihao,Ma, Baiwen,&Chen, J. Paul.(2021).Ultrafiltration membrane fouling by microplastics with raw water: Behaviors and alleviation methods.CHEMICAL ENGINEERING JOURNAL,410,-. |
| MLA | Li, Jingyi,et al."Ultrafiltration membrane fouling by microplastics with raw water: Behaviors and alleviation methods".CHEMICAL ENGINEERING JOURNAL 410(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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