Fabrication of a novel composite nanofiltration membrane with excellent acid resistance and water flux via the selective bond dissociation method

doi:10.1016/j.memsci.2021.120012

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 盐湖资源与化学实验室

	Fabrication of a novel composite nanofiltration membrane with excellent acid resistance and water flux via the selective bond dissociation method
	Bai, Lu; Wang, Min; Li, Zhilu; Yang, Hongjun; Peng, Zhengjun; Zhao, Youjing
刊名	JOURNAL OF MEMBRANE SCIENCE
	2021-11
卷号	643
ISSN号	0376-7388
DOI	10.1016/j.memsci.2021.120012
英文摘要	The functional layer of nanofiltration (NF) membrane greatly affects its application in acid solutions, therefore the design and fabrication of functional layer have become the spot of light. A feasible method was developed to fabricate a novel functional layer of composite NF membrane with excellent acid-resistance and separation performance via the selective bond dissociation method. Briefly, dissociation bonds were formed through the interfacial polymerization of polyethyleneimine (PEI) and cyanuric chloride (CC) on the polyethersulfone substrate (PES). Glutaraldehyde (GA) was subsequently applied to cross link with unreacted amino groups of PEI. Finally, the structure of the functional layer of AGA-PEI/CC (Acid-immersed GA-PEI/CC) NF membrane was manipulated into an inhomogeneous structure by immersing the membrane prepared in the above two steps in acid solutions to remove CC molecules. The fabricated AGA-PEI/CC exhibited excellent rejection, water flux and acid-environment stability owing to the unique structure of the functional layer fabricated by selective bond dissociation method. The rejection order was Mn2+ (97.97%) > Mg2+ (97.48%) > Zn2+ (95.15%) > Cu2+ (94.45%) > Al3+ (87.40%). The AGA-PEI/CC membrane exhibited structural stability after 2 months 0.1 mol L-1 HNO3 solutions tests, the water flux and MgCl2 rejection rate variation rate was -1.19% and +4.98%. We provided a potential strategy to synthesize acid-resistance NF membrane with desired separation performance by the selective bond dissociation method, and enriching the application of NF membrane in an acid environment.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34581]
专题	青海盐湖研究所_盐湖资源与化学实验室
推荐引用方式 GB/T 7714	Bai, Lu,Wang, Min,Li, Zhilu,et al. Fabrication of a novel composite nanofiltration membrane with excellent acid resistance and water flux via the selective bond dissociation method[J]. JOURNAL OF MEMBRANE SCIENCE,2021,643.
APA	Bai, Lu,Wang, Min,Li, Zhilu,Yang, Hongjun,Peng, Zhengjun,&Zhao, Youjing.(2021).Fabrication of a novel composite nanofiltration membrane with excellent acid resistance and water flux via the selective bond dissociation method.JOURNAL OF MEMBRANE SCIENCE,643.
MLA	Bai, Lu,et al."Fabrication of a novel composite nanofiltration membrane with excellent acid resistance and water flux via the selective bond dissociation method".JOURNAL OF MEMBRANE SCIENCE 643(2021).