Influence of incorporating beta zeolite nanoparticles on water permeability and ion selectivity of polyamide nanofiltration membranes

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Influence of incorporating beta zeolite nanoparticles on water permeability and ion selectivity of polyamide nanofiltration membranes
	Borjigin, Baoleerhu; Liu, Lixue; Yu, Ling; Xu, Lili; Zhao, Changwei; Wang, Jun
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2020-12
卷号	98 页码:77-84
关键词	beta zeolite Nanofiltration membrane Interfacial polymerization High flux
ISSN号	1001-0742
英文摘要	A novel polyamide (PA) thin film nanocomposite (TFN) membrane modified with Beta (beta) zeolite was prepared by interfacial polymerization on a poly (ether sulfone) (PES) ultrafiltration membrane. Compared with the PA thin film composite (TFC) membrane, the introduction of beta zeolite with porous structure notably increased the water flux of TFN membrane. Because the beta zeolite with tiny-sized and well-defined inner-porous acted as prior flow channels for water molecules and a barrier for the sulfate ions. The successful introduction of beta zeolite into the (PA) selective layer and their dispersion in the corresponding layer were verified by scanning electron microscope (SEM) and atomic force microscopy (AFM). Water contact angle, zeta potential measurements were used to characterize the changes of membrane surface properties before and after incorporating the beta zeolite. With the beta zeolite introducing, the water contact angle of modified TFN membrane was decreased to 47.8 degrees, which was benefited to improve the water flux. Meanwhile, the negative charges of the modified TFN membrane was increased, resulting in an enhancement of separation effect on SO42- and Cl-. In term of nanofiltration (NF) experiments, the highest pure water flux of the TFN membranes reached up to 81.22 L m(-2) hr(-1) under operating pressure of 0.2 MPa, which was 2.5 times as much as the pristine TFC membrane. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44950]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Borjigin, Baoleerhu,Liu, Lixue,Yu, Ling,et al. Influence of incorporating beta zeolite nanoparticles on water permeability and ion selectivity of polyamide nanofiltration membranes[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2020,98:77-84.
APA	Borjigin, Baoleerhu,Liu, Lixue,Yu, Ling,Xu, Lili,Zhao, Changwei,&Wang, Jun.(2020).Influence of incorporating beta zeolite nanoparticles on water permeability and ion selectivity of polyamide nanofiltration membranes.JOURNAL OF ENVIRONMENTAL SCIENCES,98,77-84.
MLA	Borjigin, Baoleerhu,et al."Influence of incorporating beta zeolite nanoparticles on water permeability and ion selectivity of polyamide nanofiltration membranes".JOURNAL OF ENVIRONMENTAL SCIENCES 98(2020):77-84.