Cation-exchange membrane fouling and cleaning in bipolar membrane electrodialysis of industrial glutamate production wastewater

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	Cation-exchange membrane fouling and cleaning in bipolar membrane electrodialysis of industrial glutamate production wastewater
	Wang, Qian; Yang, Pengbo; Cong, Wei
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2011-05-19
卷号	79 期号:1 页码:103-113
关键词	Bipolar membrane electrodialysis Cation-exchange membrane fouling Industrial glutamate production wastewater Membrane cleaning Ultrasonic cleaning
ISSN号	1383-5866
通讯作者	Cong, W
英文摘要	Bipolar membrane electrodialysis (BMED) was used to regenerate ammonium and sulfuric acid from industrial glutamate production wastewater. However, membrane fouling was observed during BMED process. The aim of present study was to identify the nature of fouling deposits for cation-exchange membranes (CEMs) and investigates the effect of various cleaning methods on the removal efficiency of fouling. A significant amount of fouling deposits were observed by scanning electron microscopy (SEM) on the CEM surface in contact with the base stream after processing five successive batches of BMED. Furthermore, the deterioration in physical and chemical membrane parameters indicated the presence of the inner membrane fouling. Elemental analysis mapping results showed that the fouling on CEM surface was identified as calcium hydroxide along with the mixtures of calcium carbonate and magnesium hydroxide. The effect of hydraulic cleaning, acid cleaning and a combination thereof with ultrasound on deposits removal was investigated. The combination of acid cleaning and ultrasound treatment has been proposed to be the most effective cleaning method, which removed the CEM fouling on the surface and in the interior membrane as well as restored the membrane performance efficiently. After 60 s of ultrasound treatment in 1% HCl solution, the cleaned membrane presented a plane and clean surface similar to an original one in the analysis of SEM. The results of surface elemental analysis and membrane parameters detection indicated that the chemical composition and the performance of cleaned membrane were very close to an original one. (C) 2011 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	SKIM MILK ELECTROACIDIFICATION ; REVERSE-OSMOSIS MEMBRANES ; MICROSCOPIC APPROACH ; ION ; ULTRAFILTRATION ; DESALINATION ; ENHANCEMENT ; ULTRASOUND ; AMMONIA ; WHEY
收录类别	SCI
语种	英语
WOS记录号	WOS:000291421200015
公开日期	2013-11-05
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4866]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	Chinese Acad Sci, Natl Key Lab Biochem Engn, Inst Proc Engn, Grad Sch, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qian,Yang, Pengbo,Cong, Wei. Cation-exchange membrane fouling and cleaning in bipolar membrane electrodialysis of industrial glutamate production wastewater[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2011,79(1):103-113.
APA	Wang, Qian,Yang, Pengbo,&Cong, Wei.(2011).Cation-exchange membrane fouling and cleaning in bipolar membrane electrodialysis of industrial glutamate production wastewater.SEPARATION AND PURIFICATION TECHNOLOGY,79(1),103-113.
MLA	Wang, Qian,et al."Cation-exchange membrane fouling and cleaning in bipolar membrane electrodialysis of industrial glutamate production wastewater".SEPARATION AND PURIFICATION TECHNOLOGY 79.1(2011):103-113.