DICP OpenIR
Fouling behavior and scaling mitigation strategy of CaSO4 in submerged vacuum membrane distillation
Zou, Tong1,2; Dong, Xiangling1,2; Kang, Guodong1; Zhou, Meiqing1; Li, Meng1; Cao, Yiming1
KeywordSubmerged Membrane Distillation Fouling Scaling Mitigation Air Backwash
Source PublicationDESALINATION
2017-10-29
DOI10.1016/j.desal.2017.10.015
Volume425Pages:86-93
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectEngineering, Chemical ; Water Resources
WOS Research AreaEngineering ; Water Resources
WOS KeywordHOLLOW-FIBER MEMBRANES ; DESALINATION APPLICATIONS ; MASS-TRANSFER ; WATER ; PRETREATMENT ; PERFORMANCE ; RESISTANCES ; PARAMETERS ; FILTRATION ; OSMOSIS
AbstractFouling and scaling in membrane distillation (MD) is one of the major obstacles to its long term stability. Submerging the membrane directly into the feed is an alternative method to prevent flow channel blockage. The fouling behavior of CaSO4 in submerged vacuum membrane distillation at varying experimental conditions was investigated. It presented a two-stage trend when the initial concentration of CaSO4 was < 2700 mg/L. Dramatic flux decline occurred once the feed was concentrated to a critical level of saturation. A on-line periodically air backwash was applied to reduce CaSO4 crystals deposition on the membrane surface or penetration in the membrane pores. While the role of air bubbles in affecting the fouling behavior of CaSO4 largely depended on the crystal formation mechanism. The fouling rate was reduced by 54% with the help of air backwash when surface crystallization controlled the process while negligible effect was made when bulk crystallization played a more important role. The result could be explained by combining the experimental data with a first-order kinetic model proposed by Tansel. The off-line water cleaning suggested that the fouling layer could be removed effectively without additional chemical agent.
Language英语
WOS IDWOS:000414890300008
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/149722
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy DNL, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zou, Tong,Dong, Xiangling,Kang, Guodong,et al. Fouling behavior and scaling mitigation strategy of CaSO4 in submerged vacuum membrane distillation[J]. DESALINATION,2017,425:86-93.
APA Zou, Tong,Dong, Xiangling,Kang, Guodong,Zhou, Meiqing,Li, Meng,&Cao, Yiming.(2017).Fouling behavior and scaling mitigation strategy of CaSO4 in submerged vacuum membrane distillation.DESALINATION,425,86-93.
MLA Zou, Tong,et al."Fouling behavior and scaling mitigation strategy of CaSO4 in submerged vacuum membrane distillation".DESALINATION 425(2017):86-93.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zou, Tong]'s Articles
[Dong, Xiangling]'s Articles
[Kang, Guodong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zou, Tong]'s Articles
[Dong, Xiangling]'s Articles
[Kang, Guodong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zou, Tong]'s Articles
[Dong, Xiangling]'s Articles
[Kang, Guodong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.