Control of concentration polarization in forward osmosis processes by membrane vibration

Ye Yuan, Tian C. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In this research, membrane vibration was examined as a new way to control the phenomena of concentration polarization (CP) in forward osmosis (FO) processes. A batch reactor was developed for dynamic studies on FO's flux behavior. The performance of «fresh water» production and reverse diffusion in the FO process were evaluated by vibrating the FO membrane under different experimental conditions. Results indicate that, with a NaCl solution (concentration = 1.0M) as the draw solution, the flux was 20-50 L/m2-h for the membrane vibration, which is much higher than that generated by the magnetic stirring method (1-6 L/m2-h). The energy consumption of the method was relatively high, but was lower than that of a RO process. It is concluded that membrane vibration could increase the flux of fresh water production and thus may be used to control the CP better than the methods being used currently.

Original languageEnglish (US)
Title of host publicationWorld Environmental and Water Resources Congress 2013
Subtitle of host publicationShowcasing the Future - Proceedings of the 2013 Congress
PublisherAmerican Society of Civil Engineers (ASCE)
Pages1370-1376
Number of pages7
ISBN (Print)9780784412947
DOIs
StatePublished - 2013
EventWorld Environmental and Water Resources Congress 2013: Showcasing the Future - Cincinnati, OH, United States
Duration: May 19 2013May 23 2013

Publication series

NameWorld Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress

Conference

ConferenceWorld Environmental and Water Resources Congress 2013: Showcasing the Future
CountryUnited States
CityCincinnati, OH
Period5/19/135/23/13

ASJC Scopus subject areas

  • Water Science and Technology

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