氧化石墨烯掺杂反渗透混合基质膜制备及性能

doi:10.11949/j.issn.0438-1157.20170977

化工学报 ›› 2018, Vol. 69 ›› Issue (1): 429-434.DOI: 10.11949/j.issn.0438-1157.20170977

氧化石墨烯掺杂反渗透混合基质膜制备及性能

陈贤鸿¹, 傅倍佳², 钟明强², 徐立新², 周勇¹, 高从堦¹

1 浙江工业大学海洋学院, 浙江杭州 310014;
2 浙江工业大学材料科学与工程学院, 浙江杭州 310014

收稿日期:2017-07-25 修回日期:2017-11-23 出版日期:2018-01-05 发布日期:2018-01-05
通讯作者: 陈贤鸿
基金资助:
国家重点研发计划项目（2016YFC0401508）；国家重点基础研究发展计划项目（2015CB655303）。

Preparation and performance of graphene oxide doped reverse osmosis mixed matrix membrane

CHEN Xianhong¹, FU Beijia², ZHONG Mingqiang², XU Lixin², ZHOU Yong¹, GAO Congjie¹

1 Ocean College, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China;
2 College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China

Received:2017-07-25 Revised:2017-11-23 Online:2018-01-05 Published:2018-01-05
Contact: 10.11949/j.issn.0438-1157.20170977
Supported by:
supported by the National Key Research and Development Program of China (2016YFC0401508) and the National Basic Research Program of China(2015CB655303).

摘要/Abstract

摘要：

由于芳香族聚酰胺反渗透膜在抗污染性以及耐氯性方面存在不足，限制了其在海水淡化等方面的应用。采用往油相中添加氧化石墨烯（GO）的二次界面聚合法改性了商业反渗透膜，评价了GO掺杂反渗透混合基质膜的分离性能和耐氯性能，并用接触角仪、Zeta电位仪、扫描电镜和原子力显微镜等仪器表征了膜的亲水性能、荷电性能以及膜表面形貌。结果表明，GO的添加提高了膜的分离性能、耐氯性能和亲水性能；当GO添加量为30 mg·L^-1时，膜的通量为（77.7±0.9） L·m^-2·h^-1，膜的截留率为97.6%±0.5%，相比商业膜分别提高了38.4%和4.5%。当氯化强度低于4800 mg·L^-1·h时，膜的水通量和盐截留率变化不明显。

关键词: 反渗透, 氧化石墨烯, 二次界面聚合, 膜, 分离

Abstract:

The aromatic polyamide reverse osmosis membrane is poor in anti-fouling performance and chlorine resistance, which is limiting its application in some fields. The commercial reverse osmosis membrane was modified by the secondary interface polymerization method of adding graphene oxide (GO) to the oil phase. The separation performance and chlorine resistance of GO-doped reverse osmosis mixed matrix membranes were evaluated. The properties of the membranes were characterized by water contact angle, Zeta potential,scanning electron microscopy (SEM) and atomic force microscopy(AFM). The results show that the addition of GO increases the hydrophilicity, separation performance and chlorine resistance of the membrane. With 30 mg·L^-1GO content, the flux and rejection rate of the membrane reach peak values of (77.7±0.9) L·m^-2 ·h^-1 and 97.6%±0.5%, increasing 38.4% and 4.5% respectively. When the chlorination intensity is less than 4800 mg·L^-1·h, the changes of water flux and salt rejection rate of the membrane are not obvious.

Key words: reverse osmosis, graphene oxide, secondary interface polymerization, membrane, separation

中图分类号:

TQ028.8

陈贤鸿, 傅倍佳, 钟明强, 徐立新, 周勇, 高从堦. 氧化石墨烯掺杂反渗透混合基质膜制备及性能[J]. 化工学报, 2018, 69(1): 429-434.

CHEN Xianhong, FU Beijia, ZHONG Mingqiang, XU Lixin, ZHOU Yong, GAO Congjie. Preparation and performance of graphene oxide doped reverse osmosis mixed matrix membrane[J]. CIESC Journal, 2018, 69(1): 429-434.

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氧化石墨烯掺杂反渗透混合基质膜制备及性能

Preparation and performance of graphene oxide doped reverse osmosis mixed matrix membrane

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