膜科学与技术

Position：Home >> Abstract

Preparation and performance exploration of anti-pollution separation membranes with fold structure

Authors： ZHENG Tiantian,LI Xinyang,MA Wensong,YANG Jing,CHENG Qi,DENG Xuesong,LIN Ligang

Units： State Key Laboratory of Separation Membrane and Membrane Processes,School of Materials Science and Engineering,Tiangong University,Tianjin 300387,China

KeyWords： anti-pollution, separation membranes, sol-gel, folds

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2021,41(6):60-66

Abstract：

The interaction between the membrane and the outside world is first carried out through the membrane surface, and the separation membrane with a special structure on the surface has attracted much attention. Using polyethylene vinyl alcohol copolymer (EVAL) as the membrane material, tetraethylorthosilicate (TEOS) was introduced to the surface of the membrane by the sol-gel method, and an EVAL modified membrane with a wrinkled structure was prepared. The structure, microstructure, anti-pollution performance, separation performance, mechanical performance were analyzed and discussed. The results showed that the flux of the modified membrane was 6 times that of the raw membrane, reaching 384.3 L/(m2·h). After the modification, the rejection rate of the membrane to BSA increased from 75% to 99.3%; the modified membrane had a good performance. Compared with the raw membrane, the elastic modulus of the modified membrane increased from 7.47 MPa to 8.57 MPa, and the elongation increased from 16.6% to 36.6%, showing good mechanical properties. Through the strategy, a modified membrane with higher separation performance, anti-fouling performance and mechanical performance is obtained, and related research has certain reference value for membrane surface modification.

Funds：

国家自然科学基金（22078244、21676199），全国大学生创新训练项目（201910058007）

AuthorIntro：

郑甜甜（1996-），女，天津人，硕士研究生，研究方向为膜分离，E-mail：zhengtiantian2021@163.com

Reference：

[1]徐南平, 高从堦, 金万勤. 中国膜科学技术的创新进展 [J]. 中国工程科学, 2014,16 (12): 4-9.
[2]王湛. 膜分离技术基础(第三版) [M]. 北京:化学工业出版社, 2019.
[3]杨思民, 王建强, 刘富. 油水分离膜研究进展. 膜科学与技术, 2019,39(3):132-141.
[4] Wang S,Wang Z Y,Xia J Z,et al. Polyethylene-supported nanofiltration membranes with in situ formed surface patterns of millimeter size in resisting fouling[J]. J Membr Sci, 2020, 620(10):118830.
[5] Li Q,Zhang P,Yang C H,et al. Switchable adhesion between hydrogels by wrinkling[J]. Extreme Mechanics Letters, 2021, 43(1):101193.
[6] Zhang X,Liu C,Yang J,et al.Nanofiltration membranes with hydrophobic microfiltration substrates for robust structure stability and high water permeation flux[J]. J Membr Sci,2021,593:101193.
[7]Wu Y,Zeng J,Huang X,et al. Styrene-maleic anhydride/polyethersulfone blending membranes modified by PEI functionalized TiO2 to enhance separation and antifouling properties: dye purification[J]. J Envir Chem, 2021,12:106040.
[8]Zhao X T,Zhang R N,Liu Y N,et al.Anti-fouling membrane surface construction:chemistry plays a critical role[J].J Member Sci,2018,551:145-171.
[9]Wu M F,Chen Y F,Lin H J,et al.Membrane fouling caused by biological foams in a submerged membrane bioreactor:mechanism insights[J].Water Res.2020,181:115932.
[10]Ma S S,Lin L G,Wang Q,et al. A new strategy to simultaneously improve the permeability and antifouling properties of EVAL membranes via surface segregation of macrocyclic supra-amphiphiles[J]. J Membr Sci, 2019, 595:117562.
[11]Ma S S,Lin L G,Wang Q, et al. Bio-inspired EVAL membrane modified with cilia-like structures showing simultaneously enhanced permeability and anti-fouling properties[J]. Colloids and Surfaces B: Bio-interfaces, 2019, 181:134-142.
[12]殷俊.改性SiO2纳米粒子/聚醚砜复合超滤膜的制备及其应用研究[D].东南大学,2016.
[13]黄静,赵琦,卓坚锐,等.交联PVA-SiO2复合膜的制备及性能[J].塑料,2010,39(1):7-8+41.

Service：

【Download】【Collect】

《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com