Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1

Quorum quenching (QQ) has been demonstrated to be a novel technique for controlling biofouling in membrane bioreactors (MBRs), as it can significantly inhibit biofilm formation by disrupting quorum sensing (QS). The exploration of new QQ bacterial strains and the evaluation of their performance in m...

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Main Authors: Wang, Rui, An, Zijing, Fan, Lu, Zhou, Yan, Su, Xiaomei, Zhu, Junjie, Zhang, Qian, Chen, Chongjun, Lin, Hongjun, Sun, Faqian
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/172352
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1723522023-12-06T07:27:34Z Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1 Wang, Rui An, Zijing Fan, Lu Zhou, Yan Su, Xiaomei Zhu, Junjie Zhang, Qian Chen, Chongjun Lin, Hongjun Sun, Faqian School of Civil and Environmental Engineering Engineering::Environmental engineering Quorum Quenching Extracellular Polymeric Substances Quorum quenching (QQ) has been demonstrated to be a novel technique for controlling biofouling in membrane bioreactors (MBRs), as it can significantly inhibit biofilm formation by disrupting quorum sensing (QS). The exploration of new QQ bacterial strains and the evaluation of their performance in mitigating membrane fouling in MBR systems is significant. In this study, an efficient QQ strain, Brucella sp. ZJ1 was encapsulated in alginate beads and evaluated for its ability to mitigate biofouling. The findings revealed that MBR with QQ beads extended the operation time by 2-3 times without affecting pollutant degradation. QQ beads maintained approximately 50% QQ activity after more than 50 days operation, indicating a long-lasting and endurable QQ effect. The QQ effect reduced extracellular polymeric substance (EPS) production especially in terms of polysaccharide and protein by more than 40%. QQ beads in the MBR also reduced the cake resistance and the irreversible resistance of membrane biofouling. Metagenomic sequencing suggests that QQ beads suppressed the QS effect and increased the abundance of QQ enzyme genes, ultimately inducing efficient membrane biofouling control. This study was funded by the National Natural Science Foundation of China (Nos. 51808501), the Jinhua Science and Technology Bureau (2021-4-345 and 2022-4-033) and the Jiangsu Provincial Key Laboratory of Environmental Science and Engineering (Zd1905). 2023-12-06T07:27:34Z 2023-12-06T07:27:34Z 2023 Journal Article Wang, R., An, Z., Fan, L., Zhou, Y., Su, X., Zhu, J., Zhang, Q., Chen, C., Lin, H. & Sun, F. (2023). Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1. Journal of Environmental Management, 339, 117961-. https://dx.doi.org/10.1016/j.jenvman.2023.117961 0301-4797 https://hdl.handle.net/10356/172352 10.1016/j.jenvman.2023.117961 37075636 2-s2.0-85152553924 339 117961 en Journal of Environmental Management © 2023 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Environmental engineering
Quorum Quenching
Extracellular Polymeric Substances
spellingShingle Engineering::Environmental engineering
Quorum Quenching
Extracellular Polymeric Substances
Wang, Rui
An, Zijing
Fan, Lu
Zhou, Yan
Su, Xiaomei
Zhu, Junjie
Zhang, Qian
Chen, Chongjun
Lin, Hongjun
Sun, Faqian
Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1
description Quorum quenching (QQ) has been demonstrated to be a novel technique for controlling biofouling in membrane bioreactors (MBRs), as it can significantly inhibit biofilm formation by disrupting quorum sensing (QS). The exploration of new QQ bacterial strains and the evaluation of their performance in mitigating membrane fouling in MBR systems is significant. In this study, an efficient QQ strain, Brucella sp. ZJ1 was encapsulated in alginate beads and evaluated for its ability to mitigate biofouling. The findings revealed that MBR with QQ beads extended the operation time by 2-3 times without affecting pollutant degradation. QQ beads maintained approximately 50% QQ activity after more than 50 days operation, indicating a long-lasting and endurable QQ effect. The QQ effect reduced extracellular polymeric substance (EPS) production especially in terms of polysaccharide and protein by more than 40%. QQ beads in the MBR also reduced the cake resistance and the irreversible resistance of membrane biofouling. Metagenomic sequencing suggests that QQ beads suppressed the QS effect and increased the abundance of QQ enzyme genes, ultimately inducing efficient membrane biofouling control.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Wang, Rui
An, Zijing
Fan, Lu
Zhou, Yan
Su, Xiaomei
Zhu, Junjie
Zhang, Qian
Chen, Chongjun
Lin, Hongjun
Sun, Faqian
format Article
author Wang, Rui
An, Zijing
Fan, Lu
Zhou, Yan
Su, Xiaomei
Zhu, Junjie
Zhang, Qian
Chen, Chongjun
Lin, Hongjun
Sun, Faqian
author_sort Wang, Rui
title Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1
title_short Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1
title_full Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1
title_fullStr Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1
title_full_unstemmed Effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by Brucella sp. ZJ1
title_sort effect of quorum quenching on biofouling control and microbial community in membrane bioreactors by brucella sp. zj1
publishDate 2023
url https://hdl.handle.net/10356/172352
_version_ 1784855599931981824