Processing municipal wastewaters by forward osmosis using CTA membrane

Zhang, Xiwang, Ning, Zhiyao, Wang, David K. and Diniz da Costa, Joao C. (2014) Processing municipal wastewaters by forward osmosis using CTA membrane. Journal of Membrane Science, 468 269-275. doi:10.1016/j.memsci.2014.06.016

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Author Zhang, Xiwang
Ning, Zhiyao
Wang, David K.
Diniz da Costa, Joao C.
Title Processing municipal wastewaters by forward osmosis using CTA membrane
Journal name Journal of Membrane Science   Check publisher's open access policy
ISSN 1873-3123
Publication date 2014-10-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.memsci.2014.06.016
Volume 468
Start page 269
End page 275
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
Direct sewage filtration by forward osmosis (FO) was investigated with the aim of concentrating organic matters in sewage into a small volume of energy source. The results showed that chemical oxidation demand (COD) in the feed sewage solution was concentrated by more than 300%. Although a gradual decline in membrane flux with filtration time occurred, a flux of 3–7.4 L m−2 h−1 was still produced satisfactorily. The membrane flux decline was caused by both membrane fouling and the decline of osmotic driving force due to the salinity change in both feed solution and draw solution. The membrane fouling analysis indicated that the fouling was mainly attributed to the formation of cake layer on the membrane surface in both membrane orientation, the active layer facing the feed side (AL-FS) and the active layer facing the draw solution side (AL-DS). However, AL-FS outperformed AL-DS in terms of membrane flux and fouling. This study may offer new insight into the development of low-energy wastewater treatment processes and energy recovery.
Keyword Forward osmosis
Municipal wastewater
Energy reduction
Membrane fouling
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
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Citation counts: TR Web of Science Citation Count  Cited 27 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 30 times in Scopus Article | Citations
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Created: Thu, 17 Jul 2014, 21:07:29 EST by Mr David Wang on behalf of School of Chemical Engineering