TY - JOUR
T1 - Methane production in an anaerobic osmotic membrane bioreactor using forward osmosis: Effect of reverse salt flux
AU - Li, Sheng
AU - Kim, Youngjin
AU - Phuntsho, Sherub
AU - Chekli, Laura
AU - Kyong Shon, Ho
AU - Leiknes, TorOve
AU - Ghaffour, NorEddine
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.
PY - 2017/5/10
Y1 - 2017/5/10
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/623641
UR - http://www.sciencedirect.com/science/article/pii/S0960852417306831
UR - http://www.scopus.com/inward/record.url?scp=85019397339&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2017.05.044
DO - 10.1016/j.biortech.2017.05.044
M3 - Article
C2 - 28531853
SN - 0960-8524
VL - 239
SP - 285
EP - 293
JO - Bioresource Technology
JF - Bioresource Technology
ER -
