Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/146812
Title: Development of a quorum quenching-column to control biofouling in reverse osmosis water treatment processes
Authors: Lee, Seonki
Xu, Huijuan
Rice, Scott A.
Chong, Tzyy Haur
Oh, Hyun-Suk
Keywords: Engineering::Environmental engineering::Water treatment
Issue Date: 2021
Source: Lee, S., Xu, H., Rice, S. A., Chong, T. H. & Oh, H. (2021). Development of a quorum quenching-column to control biofouling in reverse osmosis water treatment processes. Journal of Industrial and Engineering Chemistry, 94, 188-194. https://dx.doi.org/10.1016/j.jiec.2020.10.037
Journal: Journal of Industrial and Engineering Chemistry 
Abstract: Biofouling is recognized as one of the most problematic fouling types in reverse osmosis (RO) processes and lead to high energy requirements and operating costs. Over the past decade, many studies on membrane bioreactor (MBR) systems for wastewater applications demonstrated that disrupting cell-cell communications among bacteria, called quorum quenching (QQ), is a promising approach to inhibit biofouling of membranes. Here, we developed the QQ-column as a novel strategy to control biofouling in RO systems. The QQ-column was prepared by incorporating a recombinant bacterial QQ strain into hydrogel beads and embedding these beads inside a column. The QQ-column was installed upstream of the RO module to degrade N-acyl homoserine lactone, a quorum sensing (QS) signal, from the feed in a laboratory-scale RO system operating in total recycle mode. The QQ-column reduced the concentrations of signal molecules by ~29% in an RO system and mitigated biofilm formation (38.6% reduction of cell number) on the membrane, consequently reducing the transmembrane pressure by 50.1%. These results demonstrate that integrating QQ bacteria into columns is a practical method to control biofouling in RO systems.
URI: https://hdl.handle.net/10356/146812
ISSN: 1226-086X
DOI: 10.1016/j.jiec.2020.10.037
Rights: © 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. This paper was published in Journal of Industrial and Engineering Chemistry and is made available with permission of The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V.
Fulltext Permission: embargo_20230225
Fulltext Availability: With Fulltext
Appears in Collections:NEWRI Journal Articles

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