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Chemical filtration of Cr (VI) with electrospun chitosan nanofiber membranes
Li, Lei1,2,3; Li, Yanxiang1,2; Yang, Chuanfang1,2
2016-04-20
Source PublicationCARBOHYDRATE POLYMERS
ISSN0144-8617
Volume140Issue:APRPages:299-307
Abstract

Chitosan nanofibers (average diameter of 75 nm) were electrospun on polyester (PET) scrim to form composite nanofiber membranes with controlled pore size. The membranes were then stacked as a membrane bed for chemical filtration of Cr (VI) of 1-5 mg/L. The performance of the bed with respect to loading capacity at breakthrough, bed saturation and utilization efficiency were carefully investigated. The results showed that while these three parameters were dependent on pH, flow rate, flow distribution and packed pattern of the membrane, the latter two were less affected by feed Cr (VI) concentration and bed length. The maximum bed loading capacity for 1 mg/L Cr (VI) filtration at breakthrough was found to be 16.5 mgchromium/g-chitosan, higher than the static adsorption capacity of 11.0 mg-chromium/g-chitosan using nanofiber mats, indicating the membranes' better potential for dynamic adsorption. The minimum bed length required to avoid breakthrough was determined to be three layers of stacked membranes with nanofiber deposition density of 1 g/m2 by applying bed depth service time (BDST) model. (C) 2015 Elsevier Ltd. All rights reserved.

KeywordElectrospun Chitosan Nanofiber Membrane Chemical Filtration Chromium (Vi) Adsorption Breakthrough Curves Model Fitting
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.carbpol.2015.12.067
Indexed BySCI
Language英语
WOS KeywordAqueous-solution ; Metal-ions ; Adsorption ; Removal ; Fibers ; Bioseparations ; Sorption ; Design ; Column ; Copper
WOS Research AreaChemistry ; Polymer Science
WOS SubjectChemistry, Applied ; Chemistry, Organic ; Polymer Science
Funding OrganizationChinese Academy of Sciences under the talented program ; National Nature Science Foundation of China(51302267 ; 21476237 ; 21401210)
WOS IDWOS:000369958300038
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20637
Collection研究所(批量导入)
Corresponding AuthorYang, Chuanfang
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Lei,Li, Yanxiang,Yang, Chuanfang. Chemical filtration of Cr (VI) with electrospun chitosan nanofiber membranes[J]. CARBOHYDRATE POLYMERS,2016,140(APR):299-307.
APA Li, Lei,Li, Yanxiang,&Yang, Chuanfang.(2016).Chemical filtration of Cr (VI) with electrospun chitosan nanofiber membranes.CARBOHYDRATE POLYMERS,140(APR),299-307.
MLA Li, Lei,et al."Chemical filtration of Cr (VI) with electrospun chitosan nanofiber membranes".CARBOHYDRATE POLYMERS 140.APR(2016):299-307.
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