Surface functionalization of nanofiltration membrane by catechol-amine codeposition for enhancing antifouling performance

doi:10.1016/j.memsci.2021.119451

	Surface functionalization of nanofiltration membrane by catechol-amine codeposition for enhancing antifouling performance
	Zhang, Jinxuan 1,2; Zhou, Fangfang 1,2; Li, Sushuang 1,2; Wan, Yinhua 1,2; Luo, Jianquan 1,2
刊名	JOURNAL OF MEMBRANE SCIENCE
	2021-10-01
卷号	635 页码:10
关键词	Micropollutant Surface modification Biocatalytic membrane Membrane fouling Self-cleaning membrane
ISSN号	0376-7388
DOI	10.1016/j.memsci.2021.119451
英文摘要	Nanofiltration (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.
资助项目	Beijing 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关键词	WASTE-WATER TREATMENT ; REACTORS PMRS ; POLYMERIZATION ; REMOVAL ; SALT
WOS研究方向	Engineering ; Polymer Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000672598000002
资助机构	Beijing Natural Science Foundation ; National Key Research and Development Plan of China ; Open Funding Project of the State Key Laboratory of Biochemical Engineering
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/49358]
专题	中国科学院过程工程研究所
通讯作者	Wan, Yinhua; Luo, Jianquan
作者单位	1.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
推荐引用方式 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.