Development of a quorum quenching-column to control biofouling in reverse osmosis water treatment processes
| Autor: | Tzyy Haur Chong, Huijuan Xu, Hyun-Suk Oh, Seonki Lee, Scott A. Rice |
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| Přispěvatelé: | School of Civil and Environmental Engineering, School of Biological Sciences, Nanyang Environment and Water Research Institute, Singapore Centre for Environmental Life Sciences and Engineering (SCELSE) |
| Rok vydání: | 2021 |
| Předmět: |
Fouling
Polymers Chemistry General Chemical Engineering Biofilm Quorum Sensing 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Membrane bioreactor 01 natural sciences 0104 chemical sciences Biofouling Quorum sensing Membrane Chemical engineering Quorum Quenching Environmental engineering::Water treatment [Engineering] 0210 nano-technology Reverse osmosis 03 Chemical Sciences 09 Engineering |
| Zdroj: | Journal of Industrial and Engineering Chemistry. 94:188-194 |
| ISSN: | 1226-086X |
| Popis: | 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. Economic Development Board (EDB) National Research Foundation (NRF) Accepted version This study was supported by the Research Fund for a new professor by the SeoulTech (Seoul National University of Science and Technology). We also acknowledge financial support from the Singapore Centre for Environmental Life Sciences Engineering, whose research is supported by the National Research Foundation Singapore, Ministry of Education, Nanyang Technological University and National University of Singapore, under its Research Centre of Excellence Programme. The funding support from the Economic Development Board (EDB) of Singapore to the Singapore Membrane Technology Centre (SMTC), Nanyang Environment & Water Research Institute (NEWRI), Nanyang Technological Univer- sity (NTU) is also acknowledged |
| Databáze: | OpenAIRE |
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