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Promoting dynamic adsorption of Pb2+ in a single pass flow using fibrous nano-TiO2/cellulose membranes
Li, Yanxiang1; Li, Lei1,2; Cao, Lixia1; Yang, Chuanfang1
2016
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume283Issue:JANPages:1145-1153
AbstractA 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.
KeywordNano-tio2/cellulose Membrane Lead Dynamic Adsorption Breakthrough
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cej.2015.08.068
Indexed BySCI
Language英语
WOS KeywordFIXED-BED COLUMN ; HEAVY-METAL REMOVAL ; TITANIUM-DIOXIDE ; WASTE-WATER ; OXIDE NANOMATERIALS ; ARSENIC REMOVAL ; IN-SITU ; NANOPARTICLES ; BIOSORPTION ; MODELS
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationChinese Academy of Sciences ; National Nature Science Foundation of China(51302267 ; 21476237)
WOS IDWOS:000364247100118
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19784
Collection生化工程国家重点实验室
Affiliation1.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
Recommended Citation
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.
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