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Mussel-inspired co-deposition to enhance bisphenol A removal in a bifacial enzymatic membrane reactor
Cao, Xiaotong1,2; Luo, Jianquan1,2; Woodley, John M.3; Wan, Yinhua1,2

In this study, the biocatalytic membranes were prepared by 'reverse filtration' of laccase and subsequently various mussel-inspired coating strategies: single dopamine (DA) deposition, DA/polyethyleneimine (PEI) co-deposition, and DA/Cu2+ co-deposition, where nanofiltration (NF) membranes were used as the matrix to further exploit the potential of the biocatalytic membranes. Such prepared biocatalytic membranes were enzymatically active on both sides, making it possible to construct a bifacial enzymatic membrane reactor (EMR) for highly efficient micro-pollutants removal (taking bisphenol A (BPA) as an example). Compared with the single polydopamine (PDA) coated membrane, the biocatalytic membranes prepared by DA/PEI and DA/Cu2+ co-depositions exhibited much better performances in terms of enzyme loading, activity and permeability as well as the stability of immobilized enzyme. The BPA removal efficiency was highest for the EMR with the PDA/Cu2+ coated membrane attributed to copper-enhanced electron transfer, while it was lowest for the EMR with the PDA/PEI coated membrane due to the high diffusional resistance of the dense PDA/PEI layer. Meanwhile, the mechanism for performance deterioration of biocatalytic membrane during BPA treatment was revealed, and it was found that the trade-off between BPA removal efficiency and long-term stability could be broken by applying the bifacial EMR with PDA/Cu2+ coated membrane in flow-through mode, since the pressure-induced convective mass transfer improved the substrate accessibility to enzyme together with products removal.

KeywordLaccase Immobilization Biocatalytic Membrane Micro-pollutant Tertiary Wastewater Treatment Enzymatic Membrane Reactor
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordWaste-water ; Ceramic Membranes ; Laccase ; Degradation ; Biotransformation ; Micropollutants ; Immobilization ; Nanoparticle ; Adsorption ; Filtration
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Science Foundation of China(21506229) ; 100 Talents Program ; Youth Innovation Promotion Association of Chinese Academy of Sciences(2017069)
WOS IDWOS:000427614800030
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tech Univ Denmark, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark
Recommended Citation
GB/T 7714
Cao, Xiaotong,Luo, Jianquan,Woodley, John M.,et al. Mussel-inspired co-deposition to enhance bisphenol A removal in a bifacial enzymatic membrane reactor[J]. CHEMICAL ENGINEERING JOURNAL,2018,336:315-324.
APA Cao, Xiaotong,Luo, Jianquan,Woodley, John M.,&Wan, Yinhua.(2018).Mussel-inspired co-deposition to enhance bisphenol A removal in a bifacial enzymatic membrane reactor.CHEMICAL ENGINEERING JOURNAL,336,315-324.
MLA Cao, Xiaotong,et al."Mussel-inspired co-deposition to enhance bisphenol A removal in a bifacial enzymatic membrane reactor".CHEMICAL ENGINEERING JOURNAL 336(2018):315-324.
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