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Biomimetic dynamic membrane (BDM): Fabrication method and roles of carriers and laccase
Zhu, Zhenzhou1; Chen, Zhe1; Luo, Xiao1; Liang, Wenzhong2; Li, Shuyi1; He, Jingren1; Zhang, Wenxiang1,3,4; Hao, Tianwei4; Yang, Zi5
2020-02-01
Source PublicationChemosphere
ISSN0045-6535
Volume240Issue:124882
Abstract

Biomimetic dynamic membrane (BDM) has been employed as a promising membrane separation technology regarding water/wastewater treatment (Model pollutant is methylene blue). Given its catalytic function on micro-pollutant removal and fouling control, detailed mechanism for impacts of fabrication method, carriers (CNT and GO) and laccase on the construction of biomimetic layer and enzyme immobilization have not been clear so far. In this work, the BDM performance with various fabrication methods, carriers and laccase were investigated and verified. The BDM fabrication tests demonstrated that BDM with mixed filtration method had better filtration performance (up to 120 L m h flux and 80% removal rate) than BDM with stepwise filtration method. Moreover, the laccases immobilized on GO exhibited a stronger laccase activity than those on CNT. Increasing CNT or GO dosage strengthened removal rate, but lowered flux, meanwhile flux and removal rate exhibited a significant fluctuation with certain laccase dosage. At 25 g m CNT or GO dosage and 50 g m laccase dosage, the optimized flux and removal rate values were obtained. Further study investigated the surface morphology and property of BDM, showing that BDM with mixed filtration method turned out to be the optimized enzyme immobilization mechanism and fabrication method. In addition, during multiple filtration cycles, with the optimized conditions, the removal rate, flux and laccase activity of BDM could maintain at high levels. On account of the finding of the present study, selecting a suitable fabrication method, appropriate CNT or GO dosage and laccase dosage can indeed optimize the structure of biomimetic layer and enzyme immobilization, expanding its possibility on sustainable operation.

KeywordBiomimetic Dynamic Membrane (Bdm) Laccase Immobilization Mechanism Carrier Adsorption Fabrication Method Laccase Activity
DOI10.1016/j.chemosphere.2019.124882
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000497600800120
Scopus ID2-s2.0-85072901987
Fulltext Access
FWCI0.9287478
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorZhang, Wenxiang
Affiliation1.College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
2.South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510655, China
3.School of Environmental Science and Engineering, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
4.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, China
5.Department of Materials Science and Engineering, The Ohio State University, Columbus, 43210, United States
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Zhu, Zhenzhou,Chen, Zhe,Luo, Xiao,et al. Biomimetic dynamic membrane (BDM): Fabrication method and roles of carriers and laccase[J]. Chemosphere,2020,240(124882).
APA Zhu, Zhenzhou,Chen, Zhe,Luo, Xiao,Liang, Wenzhong,Li, Shuyi,He, Jingren,Zhang, Wenxiang,Hao, Tianwei,&Yang, Zi.(2020).Biomimetic dynamic membrane (BDM): Fabrication method and roles of carriers and laccase.Chemosphere,240(124882).
MLA Zhu, Zhenzhou,et al."Biomimetic dynamic membrane (BDM): Fabrication method and roles of carriers and laccase".Chemosphere 240.124882(2020).
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