DOI: 10.1016/j.watres.2018.11.078
Scopus记录号: 2-s2.0-85059115742
论文题名: Biomimetic dynamic membrane for aquatic dye removal
作者: Chen W. ; Mo J. ; Du X. ; Zhang Z. ; Zhang W.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 243
结束页码: 251
语种: 英语
英文关键词: Adsorption
; Adsorptive dynamic membrane (ADM)
; Biomimetic dynamic membrane (BDM)
; Dye removal
; Enzymatic degradation
Scopus关键词: Adsorption
; Biomimetics
; Carbon nanotubes
; Catalysis
; Catalyst deactivation
; Cleaning
; Enzymes
; Membranes
; Wastewater treatment
; Water treatment
; Yarn
; Dye removal
; Dynamic membranes
; Enzymatic Degradation
; Filtration resistance
; Functional membranes
; Operation parameters
; Optimized operations
; Transmembrane pressures
; Microfiltration
; carbon nanotube
; crystal violet
; deionized water
; laccase
; adsorption
; carbon nanotube
; catalysis
; degradation
; dye
; enzyme activity
; membrane
; operations technology
; performance assessment
; pollutant removal
; wastewater treatment
; absorption
; adsorption
; Article
; biomimetic dynamic membrane
; biomimetics
; catalysis
; catalyst
; chemical structure
; comparative study
; concentration (parameters)
; contact angle
; controlled study
; enzymatic degradation
; filtration
; fouling control
; hydrophilicity
; membrane
; pore size
; pressure
; priority journal
; process optimization
; separation technique
; shear stress
; waste component removal
; waste water management
; water permeability
英文摘要: This study utilized physical adsorption and filtration of carbon nanotubes (CNTs) and laccases to fabricate biomimetic dynamic membrane (BDM) for the advanced treatment of dye wastewater. In BDM, the adsorption, enzymatic degradation and membrane separation demonstrated a synergism effect on pollutant removal. At first, the fabrication methods of BDM were investigated, and the mixed filtration for laccases and CNTs showed a better performance than the stepwise filtration. Furthermore, the operation parameters of BDM, including CNTs and laccase loading amounts, dye concentration, agitation speed and transmembrane pressure (TMP), were studied. Suitable CNTs and laccase amounts could reduce filtration resistance and increase catalysis efficiency, while moderate TMP and agitation speed were in favor of boosting the BDM structure for catalysis and permeability. Optimized operation parameters (CNT loading amount = 20 g m −2 , laccase loading amount = 74.6 g m −2 , agitation speed = 100 rpm, and TMP = 1.0 bar) sustained a high removal rate, and the flux was over 120 L m −2 h −1 , even for 7 operation cycle’ tests. BDM exhibited an excellent dye removal rate, stable flux and great antifouling capacity, on the ground that adsorption saturation and foulant may be alleviated “online and in-situ” by the enzymatic degradation. Afterwards, the bionic layer on BDM, after absorption saturation and catalyst deactivation, could be eliminated rapidly by carrying out a simple backwash cleaning operation, then a new one could be fabricated immediately. Therefore, BDM is a good candidate for functional membrane materials in future water treatment. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122057
Appears in Collections: 气候变化事实与影响
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作者单位: School of Environmental Science and Engineering, Guangzhou, 510006, China; School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China; William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH 43210, United States
Recommended Citation:
Chen W.,Mo J.,Du X.,et al. Biomimetic dynamic membrane for aquatic dye removal[J]. Water Research,2019-01-01