Promoting dynamic adsorption of Pb2+ in a single pass flow using fibrous nano-TiO2/cellulose membranes

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	Promoting dynamic adsorption of Pb2+ in a single pass flow using fibrous nano-TiO2/cellulose membranes
	Li, Yanxiang 1; Li, Lei 1,2; Cao, Lixia 1; Yang, Chuanfang 1
刊名	CHEMICAL ENGINEERING JOURNAL
	2016
卷号	283 期号:JAN 页码:1145-1153
关键词	Nano-TiO2/cellulose membrane Lead Dynamic adsorption Breakthrough
ISSN号	1385-8947
英文摘要	A variety of nano-TiO2/cellulose composite fibers (TiO2/CF) were synthesized via both in situ growing rutile TiO2 nanocrystals and electrostatic self-assembly of commercial nano rutile TiO2 particles onto cellulose fibers. These fibers were then processed into fibrous membrane beds by wet-laid technique. Dynamic adsorption of lead (Pb2+) was subsequently carried out by pumping the feed solution through the bed in a single-pass flow mode. The influence of various parameters including flow rate, bed height and bed stacking pattern on bed breakthrough behavior was investigated. It was found that the in situ-TiO2/CF bed outperformed others; its loading capacity of Pb2+ was 13 times that of pure CF bed, and 9 times that of the self-assembled TiO2/cellulose bed prior to 10% breakthrough. The dynamic adsorption behavior of the in situ-TiO2/CF bed was better predicted by Dose Response model among other models tested. The bed was also selective for Pb2+ over Ca2+, and was readily regenerable when eluted with 0.1 M HCl solution for repeated use. The outstanding performance of the in situ-TiO2/CF bed was a result of larger fiber adsorption capacity and faster adsorption kinetics compared with the other beds having similar geometric bed structure. (C) 2015 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	FIXED-BED COLUMN ; HEAVY-METAL REMOVAL ; TITANIUM-DIOXIDE ; WASTE-WATER ; OXIDE NANOMATERIALS ; ARSENIC REMOVAL ; IN-SITU ; NANOPARTICLES ; BIOSORPTION ; MODELS
收录类别	SCI
语种	英语
WOS记录号	WOS:000364247100118
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19784]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Yanxiang,Li, Lei,Cao, Lixia,et al. Promoting dynamic adsorption of Pb2+ in a single pass flow using fibrous nano-TiO2/cellulose membranes[J]. CHEMICAL ENGINEERING JOURNAL,2016,283(JAN):1145-1153.
APA	Li, Yanxiang,Li, Lei,Cao, Lixia,&Yang, Chuanfang.(2016).Promoting dynamic adsorption of Pb2+ in a single pass flow using fibrous nano-TiO2/cellulose membranes.CHEMICAL ENGINEERING JOURNAL,283(JAN),1145-1153.
MLA	Li, Yanxiang,et al."Promoting dynamic adsorption of Pb2+ in a single pass flow using fibrous nano-TiO2/cellulose membranes".CHEMICAL ENGINEERING JOURNAL 283.JAN(2016):1145-1153.