2D kaolin ultrafiltration membrane with ultrahigh flux for water purification

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	2D kaolin ultrafiltration membrane with ultrahigh flux for water purification
	Liu, Ting ; Zhou, Huimin ; Graham, Nigel ; Yu, Wenzheng ; Sun, Kening
刊名	WATER RESEARCH
	2019-06-01
卷号	156 页码:425-433
关键词	Kaolin membrane 2D material Ultrafiltration Water treatment
ISSN号	0043-1354
英文摘要	Membrane separation technology is an important option for the treatment of contaminated surface waters but the relatively high cost of materials and membrane fabrication represent a significant obstacle to the wider use of membrane processes. In this study, we describe the development and testing of a new kind of membrane made from two-dimensional (2D) kaolin nanosheets. The fabrication involved a layer by-layer stacking of the nanosheets with a cationic polyacrylamide cross-linking agent, assembled on a cellulose acetate supporting layer. The kaolin membrane exhibited an ultrahigh flux (similar to 4000 Lm-(2).h(-1).bar(-1)) which was almost ten times greater than that of a commercial polyether sulfone (PES) ultrafiltration (UF) membrane. The membrane was tested using a range of influent water types, including samples of a lake water, river water and three natural organic matter solutions. The results showed that the kaolin membrane was stable and behaved as an UF membrane, in terms of its pore size distribution (peak distribution at 20-35 nm) and comparable treatment performance to the PES UF membrane. The kaolin membrane showed a substantially reduced rate of fouling, compared to PES membrane, despite a much greater flux, which was partly attributed to its highly hydrophilic nature. The advantages of lower cost, much higher flux and lower fouling propensity make the 2D-kaolin membrane a potentially important development in UF membrane technology for drinking water treatment, and possibly other applications. (C) 2019 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43413]
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.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 2.Imperial Coll London, Dept Civil & Environm Engn, South Kensington Campus, London SW7 2AZ, England 3.Beijing Inst Technol, Beijing Key Lab Chem Power Source & Green Catalys, Sch Chem & Chem Engn, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Liu, Ting,Zhou, Huimin,Graham, Nigel,et al. 2D kaolin ultrafiltration membrane with ultrahigh flux for water purification[J]. WATER RESEARCH,2019,156:425-433.
APA	Liu, Ting,Zhou, Huimin,Graham, Nigel,Yu, Wenzheng,&Sun, Kening.(2019).2D kaolin ultrafiltration membrane with ultrahigh flux for water purification.WATER RESEARCH,156,425-433.
MLA	Liu, Ting,et al."2D kaolin ultrafiltration membrane with ultrahigh flux for water purification".WATER RESEARCH 156(2019):425-433.