Methane production in an anaerobic osmotic membrane bioreactor using forward osmosis: Effect of reverse salt flux
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Type
ArticleAuthors
Li, Sheng
Kim, Youngjin

Phuntsho, Sherub
Chekli, Laura
Kyong Shon, Ho
Leiknes, TorOve

Ghaffour, NorEddine

KAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Date
2017-05-10Online Publication Date
2017-05-10Print Publication Date
2017-09Permanent link to this record
http://hdl.handle.net/10754/623641
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Show full item recordAbstract
This study investigated the impact of reverse salt flux (RSF) on microbe community and bio-methane production in a simulated fertilizer driven FO-AnMBR system using KCl, KNO3 and KH2PO4 as draw solutes. Results showed that KH2PO4 exhibited the lowest RSF in terms of molar concentration 19.1 mM/(m2.h), while for KCl and KNO3 it was 32.2 and 120.8 mM/(m2.h), respectively. Interestingly, bio-methane production displayed an opposite order with KH2PO4, followed by KCl and KNO3. Pyrosequencing results revealed the presence of different bacterial communities among the tested fertilizers. Bacterial community of sludge exposed to KH2PO4 was very similar to that of DI-water and KCl. However, results with KNO3 were different since the denitrifying bacteria were found to have a higher percentage than the sludge with other fertilizers. This study demonstrated that RSF has a negative effect on bio-methane production, probably by influencing the sludge bacterial community via environment modification.Citation
Li S, Kim Y, Phuntsho S, Chekli L, Kyong Shon H, et al. (2017) Methane production in an anaerobic osmotic membrane bioreactor using forward osmosis: Effect of reverse salt flux. Bioresource Technology. Available: http://dx.doi.org/10.1016/j.biortech.2017.05.044.Sponsors
The research reported in this paper was supported from the SEED program of King Abdullah University of Science and Technology (KAUST), Saudi Arabia. The help, assistance and support of the Water Desalination and Reuse Center (WDRC) at KAUST staff are greatly appreciated.Publisher
Elsevier BVJournal
Bioresource TechnologyPubMed ID
28531853Additional Links
http://www.sciencedirect.com/science/article/pii/S0960852417306831ae974a485f413a2113503eed53cd6c53
10.1016/j.biortech.2017.05.044
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