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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; Cong, W
2011-05-19
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume79Issue:1Pages:103-113
AbstractBipolar 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.
KeywordBipolar Membrane Electrodialysis Cation-exchange Membrane Fouling Industrial Glutamate Production Wastewater Membrane Cleaning Ultrasonic Cleaning
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2011.03.024
Indexed BySCI
Language英语
WOS KeywordSKIM MILK ELECTROACIDIFICATION ; REVERSE-OSMOSIS MEMBRANES ; MICROSCOPIC APPROACH ; ION ; ULTRAFILTRATION ; DESALINATION ; ENHANCEMENT ; ULTRASOUND ; AMMONIA ; WHEY
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000291421200015
Citation statistics
Cited Times:47[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/4866
Collection生化工程国家重点实验室
Corresponding AuthorCong, W
AffiliationChinese Acad Sci, Natl Key Lab Biochem Engn, Inst Proc Engn, Grad Sch, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Qian,Yang, Pengbo,Cong, Wei,et al. 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,&Cong, W.(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.
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