Biofouling control in reverse osmosis by nitric oxide treatment and its impact on the bacterial community

Hyun-Suk Oh, Florentin Constancias, Chitrakala Ramasamy, Pei Yi Peggy Tang, Mon Oo Yee, Anthony G. Fane, Diane McDougald, Scott A. Rice

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

146 Downloads (Pure)

Abstrakt

Recent discoveries regarding the regulation of the biofilm life cycle by bacterial signaling systems have identified novel strategies for manipulation of biofilm development to control the biofouling of membrane-based water purification systems. Nitric oxide (NO) signaling has been shown to induce dispersal of a wide range of single- and multi-species biofilms. However, the impact of NO-mediated biofilm dispersal on the taxa composition of natural communities as well as the potential selection for non-responding community members have rarely been addressed. Here, we investigated the effect of diethylenetriamine (DETA) NONOate, an NO donor with a long half-life, on biofilm dispersal of a bacterial community responsible for membrane biofouling to address this question. The biofilm of a complex community from a fouled industrial reverse osmosis (RO) membrane was dispersed over 50% by 500 μM of DETA NONOate treatment in a continuous flow system. Once-daily treatment with DETA NONOate in a laboratory-scale RO system demonstrated its anti-biofouling effect by delaying the transmembrane pressure increase during constant-flux filtration. Characterization of the bacterial communities of dispersed cells and remaining biofilm cells using a 16S Illumina MiSeq metabarcoding approach demonstrated that biofilm dispersal by DETA NONOate had no selection bias in the community.

OriginalsprogEngelsk
TidsskriftJournal of Membrane Science
Vol/bind550
Sider (fra-til)313-321
ISSN0376-7388
DOI
StatusUdgivet - 15. mar. 2018

Fingeraftryk Dyk ned i forskningsemnerne om 'Biofouling control in reverse osmosis by nitric oxide treatment and its impact on the bacterial community'. Sammen danner de et unikt fingeraftryk.

  • Citationsformater

    Oh, H-S., Constancias, F., Ramasamy, C., Tang, P. Y. P., Yee, M. O., Fane, A. G., McDougald, D., & Rice, S. A. (2018). Biofouling control in reverse osmosis by nitric oxide treatment and its impact on the bacterial community. Journal of Membrane Science, 550, 313-321. https://doi.org/10.1016/j.memsci.2018.01.012