Removal of Cr (VI) with a spiral wound chitosan nanofiber membrane module via dead-end filtration
Li, Lei1,2; Zhang, Jinju1,2,3; Li, Yanxiang1,2; Yang, Chuanfang1,2
2017-12-15
发表期刊JOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
卷号544期号:DEC页码:333-341
摘要

A re-generable spiral wound module of affinitive electrospun chitosan nanofiber membranes was fabricated, and the feasibility of the module for treating Cr (VI) contaminated water was studied. The effect of flow rate, initial Cr (VI) concentration, chitosan nanofiber deposition density, and other metal ions on Cr (VI) adsorption was investigated in detail. It was found that the loading capacity of the module was dependent on flow rate and nanofiber deposition density, but independent on initial Cr (VI) concentration. Lower flow rate led to higher adsorption capacity. The maximum adsorption capacity obtained with 2 g/m(2) nanofiber membranes in the module was 20.5 mg/g at 10% breakthrough. The module could also adsorb Cu (II), Cd (II) and Pb (II) ions separately but showed good selectivity to Cr (VI) when these metal ions were coexistent. The dynamic adsorption behavior of the module was better fitted by Dose-Response model. Furthermore, the separation of Cr (VI) by commercial nanofiltration (NF) membranes was examined and compared with the spiral wound nanofiber membranes constructed in this work. The result showed the latter had several advantages over the former in terms of rejection, flux and ease of operation.

关键词Electrospun Chitosan Nanofibers Spiral Wound Membrane Module Chromium (Vi) Adsorption Breakthrough Curves Affinity Membrane
文章类型Article
WOS标题词Science & Technology ; Technology ; Physical Sciences
DOI10.1016/j.memsci.2017.09.045
收录类别SCI
语种英语
关键词[WOS]HEAVY-METAL REMOVAL ; AFFINITY MEMBRANE ; AQUEOUS-SOLUTION ; NANOFILTRATION MEMBRANES ; CELLULOSE NANOFIBER ; BREAKTHROUGH CURVES ; KINETIC-PARAMETERS ; BED COLUMN ; PACKED-BED ; ADSORPTION
WOS研究方向Engineering ; Polymer Science
WOS类目Engineering, Chemical ; Polymer Science
项目资助者Key Laboratory of Green Process and Engineering Foundation of Chinese Academy of Sciences(LGPE2016YF03) ; National Natural Science Foundation of China(21506222)
WOS记录号WOS:000412350900036
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23251
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Li, Lei,Zhang, Jinju,Li, Yanxiang,et al. Removal of Cr (VI) with a spiral wound chitosan nanofiber membrane module via dead-end filtration[J]. JOURNAL OF MEMBRANE SCIENCE,2017,544(DEC):333-341.
APA Li, Lei,Zhang, Jinju,Li, Yanxiang,&Yang, Chuanfang.(2017).Removal of Cr (VI) with a spiral wound chitosan nanofiber membrane module via dead-end filtration.JOURNAL OF MEMBRANE SCIENCE,544(DEC),333-341.
MLA Li, Lei,et al."Removal of Cr (VI) with a spiral wound chitosan nanofiber membrane module via dead-end filtration".JOURNAL OF MEMBRANE SCIENCE 544.DEC(2017):333-341.
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