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Surface functionalization of nanofiltration membrane by catechol-amine codeposition for enhancing antifouling performance
Zhang, Jinxuan1,2; Zhou, Fangfang1,2; Li, Sushuang1,2; Wan, Yinhua1,2; Luo, Jianquan1,2
2021-10-01
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume635Pages:10
AbstractNanofiltration (NF) technology is promising for treatment of wastewater containing micropollutants (MPs) because it can retain both MPs and small organics while permeate inorganic salts. However, both MPs adsorption and organic fouling formation deteriorate NF membrane performance. In this work, a novel surface functionalization strategy is proposed to tackle both two issues. Based on catechol-amine chemistry, a commercially available NF membrane is modified by tannic acid-3-aminopropyltriethoxysilane (TA-APTES) coating and subsequent horseradish peroxidase (HRP) immobilization. Taking aflatoxin B1 (AFB1) as an example of MPs, its adsorption on the modified NF membrane is greatly inhibited by coating induced pore narrowing (enhancing size exclusion to MPs), surface barrier effect (alleviating the interaction between MPs and membrane) and enzymatic self-cleaning ability (degrading MPs adsorbed on the membrane), resulting in higher and more stable AFB1 rejection (similar to 90%). The flux decline and irreversible fouling are also reduced by the amphiphilic property of the immobilized HRP on the membrane surface when treating corn soaking solution. Although the on-line self-cleaning operation in the presence of hydrogen peroxide can alleviate concentration polarization by interfacial catalytic reaction, the flux decline and irreversible fouling become severer possibly due to the pore blocking by the degraded products. The off-line self-cleaning after the filtration enables to remove loose fouling layer, but the dense fouling layer impedes the accessibility of hydrogen peroxide to the immobilized HRP, limiting its self-cleaning ability. Therefore, catalytic intensity, enzymatic products and substrate accessibility to enzyme should be considered when constructing a self-cleaning NF membrane to deal with combined fouling.
KeywordMicropollutant Surface modification Biocatalytic membrane Membrane fouling Self-cleaning membrane
DOI10.1016/j.memsci.2021.119451
Language英语
WOS KeywordWASTE-WATER TREATMENT ; REACTORS PMRS ; POLYMERIZATION ; REMOVAL ; SALT
Funding ProjectBeijing Natural Science Foundation[2192053] ; National Key Research and Development Plan of China[2017YFC1600906] ; Open Funding Project of the State Key Laboratory of Biochemical Engineering[2019KF-01]
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
Funding OrganizationBeijing Natural Science Foundation ; National Key Research and Development Plan of China ; Open Funding Project of the State Key Laboratory of Biochemical Engineering
WOS IDWOS:000672598000002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49359
Collection中国科学院过程工程研究所
Corresponding AuthorWan, Yinhua; Luo, Jianquan
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Jinxuan,Zhou, Fangfang,Li, Sushuang,et al. Surface functionalization of nanofiltration membrane by catechol-amine codeposition for enhancing antifouling performance[J]. JOURNAL OF MEMBRANE SCIENCE,2021,635:10.
APA Zhang, Jinxuan,Zhou, Fangfang,Li, Sushuang,Wan, Yinhua,&Luo, Jianquan.(2021).Surface functionalization of nanofiltration membrane by catechol-amine codeposition for enhancing antifouling performance.JOURNAL OF MEMBRANE SCIENCE,635,10.
MLA Zhang, Jinxuan,et al."Surface functionalization of nanofiltration membrane by catechol-amine codeposition for enhancing antifouling performance".JOURNAL OF MEMBRANE SCIENCE 635(2021):10.
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