RCEES OpenIR  > 中国科学院饮用水科学与技术重点实验室
Constructing zwitterionic polymer brush layer to enhance gravity-driven membrane performance by governing biofilm formation
Liu, Caihong; Song, Dan; Zhang, Wenjuan; He, Qiang; Huangfu, Xiaoliu; Sun, Shaofang; Sun, Zhiqiang; Cheng, Wei; Ma, Jun
2020
Source PublicationWATER RESEARCH
ISSN0043-1354
Volume168Pages:1-26
AbstractIn this study, zwitterionic polymer brushes with controlled architecture were grafted on the surface of gravity-driven membrane (GDM) via surface-initiated reaction to impart antifouling property. A variety of membrane characterization techniques were conducted to demonstrate the successful functionalization of zwitterionic polymers on PVDF hollow fiber membrane. The membrane underwent 90 min of reaction time possessing strong hydrophilicity and high permeability was determined as the optimal modified membrane. Long-term GDM dynamic fouling experiments operated for 30 days using sewage wastewater as feed solution indicated zwitterionic polymer modified membrane exhibit excellent membrane fouling resistance thus enhanced stable flux. Confocal laser scanning microscopy (CLSM) imaging implied that zwitterionic polymer modification significantly inhibit the adsorption of extracellular polymeric substances (EPS) which dominates fouling propensity, resulting in the formation of a thin biofilm with high porosity under synthetic functions of foulants deposition and microbial activities. Interfacial free energy prediction affirmed the presence of zwitterionic functional layer on membrane surface could substantially decrease the interactions (e.g., electrostatic attractions and hydrophobic effects) between membrane and foulants, thereby reduced flux decline and high stable flux. Our study suggests surface hydrophilic functionalization shows promising potential for improving the performance of ultra-low pressure filtration. (C) 2019 Elsevier Ltd. All rights reserved.
Department中国科学院饮用水科学与技术重点实验室
KeywordGravity-driven membrane Zwitterionic polymers Antifouling Flux stabilization Biofilm
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/45259
Collection中国科学院饮用水科学与技术重点实验室
Recommended Citation
GB/T 7714
Liu, Caihong,Song, Dan,Zhang, Wenjuan,et al. Constructing zwitterionic polymer brush layer to enhance gravity-driven membrane performance by governing biofilm formation[J]. WATER RESEARCH,2020,168:1-26.
APA Liu, Caihong.,Song, Dan.,Zhang, Wenjuan.,He, Qiang.,Huangfu, Xiaoliu.,...&Ma, Jun.(2020).Constructing zwitterionic polymer brush layer to enhance gravity-driven membrane performance by governing biofilm formation.WATER RESEARCH,168,1-26.
MLA Liu, Caihong,et al."Constructing zwitterionic polymer brush layer to enhance gravity-driven membrane performance by governing biofilm formation".WATER RESEARCH 168(2020):1-26.
Files in This Item: Download All
File Name/Size DocType Version Access License
Constructing zwitter(2496KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Caihong]'s Articles
[Song, Dan]'s Articles
[Zhang, Wenjuan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Caihong]'s Articles
[Song, Dan]'s Articles
[Zhang, Wenjuan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Caihong]'s Articles
[Song, Dan]'s Articles
[Zhang, Wenjuan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Constructing zwitterionic polymer brush layer to enhance gravity-driven membrane performance by governing biofilm formation.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.