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Title: Biofouling control in reverse osmosis by nitric oxide treatment and its impact on the bacterial community
Authors: Oh, Hyun-Suk
Constancias, Florentin
Ramasamy, Chitrakala
Tang, Peggy Pei Yi
Yee, Mon Oo
Fane, Anthony Gordon
McDougald, Diane
Rice, Scott A.
Keywords: Engineering::Environmental engineering
Issue Date: 2018
Source: Oh, H.-S., Constancias, F., Ramasamy, C., Tang, P. P. Y., Yee, M. O., Fane, A. G., . . . 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. doi:10.1016/j.memsci.2018.01.012
Journal: Journal of Membrane Science 
Abstract: 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.
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2018.01.012
Rights: © 2018 The Authors (Published by Elsevier B.V.). This is an open access article under the CC BY-NC-ND license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
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