Performance of a Novel Fertilizer-Drawn Forward Osmosis Aerobic Membrane Bioreactor (FDFO-MBR): Mitigating Salinity Build-Up by Integrating Microfiltration
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ArticleDate
2017-01-04Permanent link to this record
http://hdl.handle.net/10754/668533
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In this paper, three different fertilizer draw solutions were tested in a novel forward osmosis-microfiltration aerobic membrane bioreactor (MF-FDFO-MBR) hybrid system and their performance were evaluated in terms of water flux and reverse salt diffusion. Results were also compared with a standard solution. Results showed that ammonium sulfate is the most suitable fertilizer for this hybrid system since it has a relatively high water flux (6.85 LMH) with a comparatively low reverse salt flux (3.02 gMH). The performance of the process was also studied by investigating different process parameters: draw solution concentration, FO draw solution flow rate and MF imposed flux. It was found that the optimal conditions for this hybrid system were: draw solution concentration of 1 M, FO draw solution flow rate of 200 mL/min and MF imposed flux of 10 LMH. The salt accumulation increased from 834 to 5400 μS/cm during the first four weeks but after integrating MF, the salinity dropped significantly from 5400 to 1100 μS/cm suggesting that MF is efficient in mitigating the salinity build up inside the reactor. This study demonstrated that the integration of the MF membrane could effectively control the salinity and enhance the stable FO flux in the OMBR.Citation
Wang, J., Pathak, N., Chekli, L., Phuntsho, S., Kim, Y., Li, D., & Shon, H. (2017). Performance of a Novel Fertilizer-Drawn Forward Osmosis Aerobic Membrane Bioreactor (FDFO-MBR): Mitigating Salinity Build-Up by Integrating Microfiltration. Water, 9(1), 21. doi:10.3390/w9010021Sponsors
The research reported in this paper was supported by a SEED Fund from King Abdullah University of Science and Technology (KAUST), Saudi Arabia and Doctoral Program of Higher Education of China (20130075110006).Publisher
MDPI AGJournal
WaterDOI
10.3390/w9010021Additional Links
http://www.mdpi.com/2073-4441/9/1/21ae974a485f413a2113503eed53cd6c53
10.3390/w9010021