An ultrasonic assisted direct contact membrane distillation hybrid process for desalination

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

	An ultrasonic assisted direct contact membrane distillation hybrid process for desalination
	Hou, Deyin; Dai, Guohua; Fan, Hua; Huang, Hongjing; Wang, Jun
刊名	JOURNAL OF MEMBRANE SCIENCE
	2015-02-15
卷号	476 页码:59-67
关键词	Membrane distillation Ultrasonic irradiation Desalination Permeate flux Polytetrafluoroethylene
英文摘要	A novel ultrasonic assisted direct contact membrane distillation (USDCMD) hybrid process was designed and the effects of feed temperature, feed concentration, feed velocity, ultrasonic power and frequency on mass transfer were investigated. Under ultrasonic irradiation, changes and damages in membrane structure were found on PVDF membrane, while the pore size and the stretching strain of PP fibers were also enlarged and declined, respectively. The PTFE hollow fiber was selected to carry out USDCMD. The results showed that ultrasonic irradiation could effectively enhance mass transfer. Under the ultrasonic irradiation of 20 kHz and 260 W, the maximum permeate flux enhancement of 60% was obtained under conditions of feed temperature of 53 degrees C, feed velocity of 025 m/s and feed salt concentration of 140 g/L. The increment was enlarged with the decrease of feed temperature, feed velocity and ultrasonic frequency as well as the increase of feed concentration and ultrasonic power. Ultrasonic irradiation had no significant influence on the mechanical strength, pore size and hydrophobicity of the FIFE membrane in a 240 h continuous USDCMD experiment, and the novel membrane distillation process exhibited satisfying performance stability, which indicated that ultrasonic irradiation can be applied to membrane distillation for mass transfer enhancement. (C) 2014 Elsevier B.V. All rights reserved.
研究领域[WOS]	Engineering, Chemical ; Polymer Science
WOS记录号	WOS:000349382600007
公开日期	2016-03-15
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32724]
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,Fan, Hua,et al. An ultrasonic assisted direct contact membrane distillation hybrid process for desalination[J]. JOURNAL OF MEMBRANE SCIENCE,2015,476:59-67.
APA	Hou, Deyin,Dai, Guohua,Fan, Hua,Huang, Hongjing,&Wang, Jun.(2015).An ultrasonic assisted direct contact membrane distillation hybrid process for desalination.JOURNAL OF MEMBRANE SCIENCE,476,59-67.
MLA	Hou, Deyin,et al."An ultrasonic assisted direct contact membrane distillation hybrid process for desalination".JOURNAL OF MEMBRANE SCIENCE 476(2015):59-67.