Anti-oil-fouling hydrophobic-superoleophobic composite membranes for robust membrane distillation performance

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Anti-oil-fouling hydrophobic-superoleophobic composite membranes for robust membrane distillation performance
	Tang, Min ; Hou, Deyin ; Ding, Chunli ; Wang, Kunpeng ; Wang, Dewu ; Wang, Jun
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-12-15
卷号	696 页码:-
关键词	Membrane distillation Membrane fouling Electrospinning Asymmetric wettability Composite membrane
ISSN号	0048-9697
英文摘要	As a promising thermally driven separation process, membrane distillation (MD) is capable of treating challenging wastewaters. However, the traditional hydrophobic membranes are vulnerable to fouling by non-polar contaminants owing to the strong hydrophobic-hydrophobic interactions. To address this problem, we developed novel anti-oil-fouling MD membranes in this study. The composite membranes with asymmetric wettability were fabricated through electrospinning polyacrylonitrile (PAN) fibrous coating on a hydrophobic polytetrafluoroethylene (PTFE) membrane, followed by hydrolyzing the PAN coating with ethylenediamine (EDA) and NaOH, respectively. These two composite membranes exhibited excellent underwater superoleophobicity, with the underwater oil contact angle >150 degrees, which can be attributed to the fibrous and re-entrant surface structure and the optimized surface hydrophilicity of the electrospun coating. During MD process using saline and oily emulsion as feed, the composite membranes presented robust anti-oil-fouling performance, indicating by stable permeate flux and salt rejection. A novel oil-droplet adhesion force probe was introduced to quasi-quantitatively elucidate oil-membrane interaction and evaluate membrane fouling propensity, the force spectroscopy indicated that the fabricated composite membranes had fairly less attractive to crude oil compared with the PTFE membrane. Our research results suggest that the novel composite membranes with asymmetric wettability were competent to serve as an anti-oil-fouling MD membrane for desalinating challenging saline and oily wastewaters. (C) 2019 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43422]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 3.Hebei Univ Technol, Sch Chem Engn & Technol, Tianjin 300130, Peoples R China
推荐引用方式 GB/T 7714	Tang, Min,Hou, Deyin,Ding, Chunli,et al. Anti-oil-fouling hydrophobic-superoleophobic composite membranes for robust membrane distillation performance[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,696:-.
APA	Tang, Min,Hou, Deyin,Ding, Chunli,Wang, Kunpeng,Wang, Dewu,&Wang, Jun.(2019).Anti-oil-fouling hydrophobic-superoleophobic composite membranes for robust membrane distillation performance.SCIENCE OF THE TOTAL ENVIRONMENT,696,-.
MLA	Tang, Min,et al."Anti-oil-fouling hydrophobic-superoleophobic composite membranes for robust membrane distillation performance".SCIENCE OF THE TOTAL ENVIRONMENT 696(2019):-.