气候变化领域集成服务门户(CCPortal): Carbon Nanotube Interlayer Enhances Water Permeance and Antifouling Performance of Nanofiltration Membranes: Mechanisms and Experimental Evidence

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DOI	10.1021/acs.est.1c07332
	Carbon Nanotube Interlayer Enhances Water Permeance and Antifouling Performance of Nanofiltration Membranes: Mechanisms and Experimental Evidence
	Long, Li; Wu, Chenyue; Yang, Zhe; Tang, Chuyang Y.
发表日期	2022
ISSN	0013-936X
EISSN	1520-5851
起始页码	2656
结束页码	2664
卷号	56 期号:4
英文摘要	Interlayered thin-film nanocomposite (TFNi) membranes have been shown to achieve enhanced water permeance as a result of the gutter effect. Nevertheless, some studies report impaired separation performance after the inclusion of an interlayer. In this study, we resolve the competing mechanisms of water transport in the transverse direction vs that in the normal direction. To enable easy comparison, carbon nanotube (CNT)-incorporated TFNi membranes with an identical polyamide rejection layer but different interlayer thicknesses were investigated. While increasing the thickness of the CNT interlayer facilitates water transport in the transverse direction (therefore improving the gutter effect), it simultaneously increases its hydraulic resistance in the normal direction. An optimal water permeance of 13.0 +/- 0.7 L m(-2) h(-1) bar(-1), which was more than doubled over the control membrane of 6.1 +/- 0.7 L m(-2) h(-1) bar(-1), was realized at a moderate interlayer thickness, resulting from the trade-off between these two competing mechanisms. In this study, we demonstrate reduced membrane fouling and improved fouling reversibility for a TFNi membrane over its control without an interlayer, which can be attributed to its more uniform water flux distribution. The fundamental mechanisms revealed in this study lay a solid foundation for the future development of TFNi membranes toward enhanced separation properties and antifouling ability.
英文关键词	interlayered thin-film nanocomposite (TFNi); polyamide membranes; nanofiltration; fouling; water transport path
语种	英语
WOS研究方向	Engineering, Environmental ; Environmental Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000763099700055
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280978
作者单位	University of Hong Kong
推荐引用方式 GB/T 7714	Long, Li,Wu, Chenyue,Yang, Zhe,et al. Carbon Nanotube Interlayer Enhances Water Permeance and Antifouling Performance of Nanofiltration Membranes: Mechanisms and Experimental Evidence[J],2022,56(4).
APA	Long, Li,Wu, Chenyue,Yang, Zhe,&Tang, Chuyang Y..(2022).Carbon Nanotube Interlayer Enhances Water Permeance and Antifouling Performance of Nanofiltration Membranes: Mechanisms and Experimental Evidence.ENVIRONMENTAL SCIENCE & TECHNOLOGY,56(4).
MLA	Long, Li,et al."Carbon Nanotube Interlayer Enhances Water Permeance and Antifouling Performance of Nanofiltration Membranes: Mechanisms and Experimental Evidence".ENVIRONMENTAL SCIENCE & TECHNOLOGY 56.4(2022).