Preparation and characterization of PVDF/nonwoven fabric flat-sheet composite membranes for desalination through direct contact membrane distillation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Preparation and characterization of PVDF/nonwoven fabric flat-sheet composite membranes for desalination through direct contact membrane distillation
	Hou, Deyin ; Dai, Guohua ; Wang, Jun ; Fan, Hua ; Zhang, Lin ; Luan, Zhaokun
刊名	Engineering
	2012
卷号	101 期号:1 页码:1-10
关键词	Membrane distillation Composite membrane Polyvinylidene fluoride Nonwoven fabric Hydrophobicity
ISSN号	1383-5866
中文摘要	The polyvinylidene fluoride (PVDF) flat-sheet composite membranes were prepared for membrane distillation using hydrophilic polyester nonwoven fabric as a support through coating and wet phase inversion process. The influence of non-solvent additive on membrane morphology, porosity, pore size and pore size distribution, hydrophobicity and permeability were evaluated. It was found that the membrane with a mixture of acetone and H3PO4 as non-solvent additive had a thinner top skin and a more porous network sponge-like layer from the morphology study. This membrane also exhibited a narrow pore size distribution and its mean pore size was about 0.22 mu m in diameter. The rough membrane surface with smaller nodules produced a higher contact angle of 82.6 +/- 0.7 degrees with water according to atomic force microscope images analysis. During the direct contact membrane distillation (DCMD) process of 35 g/L sodium chloride solution, the maximum transmembrane permeate flux about 47.6 kg/m(2) h was obtained with the feed solution at 80.5 degrees C and the cold distillate water at 20.0 degrees C. Furthermore, the membrane showed satisfying performance stability in the 240 h continuous desalination experiment, indicating that the prepared PVDF/nonwoven fabric flat-sheet composite membrane may be of great potential to be utilized in DCMD process for desalination. (c) 2012 Elsevier B.V. All rights reserved.
WOS记录号	WOS:000311703100001
公开日期	2014-11-28
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/8157]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Hou, Deyin,Dai, Guohua,Wang, Jun,et al. Preparation and characterization of PVDF/nonwoven fabric flat-sheet composite membranes for desalination through direct contact membrane distillation[J]. Engineering,2012,101(1):1-10.
APA	Hou, Deyin,Dai, Guohua,Wang, Jun,Fan, Hua,Zhang, Lin,&Luan, Zhaokun.(2012).Preparation and characterization of PVDF/nonwoven fabric flat-sheet composite membranes for desalination through direct contact membrane distillation.Engineering,101(1),1-10.
MLA	Hou, Deyin,et al."Preparation and characterization of PVDF/nonwoven fabric flat-sheet composite membranes for desalination through direct contact membrane distillation".Engineering 101.1(2012):1-10.