Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors

Abstract Membrane fouling is a major challenge in membrane bioreactors (MBRs) for wastewater treatment. This study investigates the effects of disturbance and solid retention time (SRT) on quorum-quenching (QQ) MBRs relative to antifouling efficacy and microbial community change. The fouling rate in...

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Autores principales:	Syed Salman Ali Shah, Luigi De Simone, Giuseppe Bruno, Hyeona Park, Kibaek Lee, Massimiliano Fabbricino, Irini Angelidaki, Kwang-Ho Choo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/229a5627ad364e748190a4b21f54bb3e
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spelling	oai:doaj.org-article:229a5627ad364e748190a4b21f54bb3e2021-12-02T17:05:10ZQuorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors10.1038/s41545-021-00110-92059-7037https://doaj.org/article/229a5627ad364e748190a4b21f54bb3e2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41545-021-00110-9https://doaj.org/toc/2059-7037Abstract Membrane fouling is a major challenge in membrane bioreactors (MBRs) for wastewater treatment. This study investigates the effects of disturbance and solid retention time (SRT) on quorum-quenching (QQ) MBRs relative to antifouling efficacy and microbial community change. The fouling rate increases with the applied disturbance at a short SRT, counteracting the antifouling effect of QQ; however, it decreases with QQ at a long SRT. The microbial community appears to be responsible for such MBR behaviors. Several bacterial species belonging to the biofilm-forming group are dominant after disturbance, resulting in substantive membrane fouling. However, the balance between the bacterial species plays a key role in MBR fouling propensity when stabilized. Koflera flava becomes dominant with QQ, leading to reduced membrane fouling. QQ makes the MBR microbial community more diverse, while lowering its richness. QQ with long SRT would be a favorable operational strategy for effective MBR fouling control.Syed Salman Ali ShahLuigi De SimoneGiuseppe BrunoHyeona ParkKibaek LeeMassimiliano FabbricinoIrini AngelidakiKwang-Ho ChooNature PortfolioarticleWater supply for domestic and industrial purposesTD201-500ENnpj Clean Water, Vol 4, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Water supply for domestic and industrial purposes TD201-500
spellingShingle	Water supply for domestic and industrial purposes TD201-500 Syed Salman Ali Shah Luigi De Simone Giuseppe Bruno Hyeona Park Kibaek Lee Massimiliano Fabbricino Irini Angelidaki Kwang-Ho Choo Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors
description	Abstract Membrane fouling is a major challenge in membrane bioreactors (MBRs) for wastewater treatment. This study investigates the effects of disturbance and solid retention time (SRT) on quorum-quenching (QQ) MBRs relative to antifouling efficacy and microbial community change. The fouling rate increases with the applied disturbance at a short SRT, counteracting the antifouling effect of QQ; however, it decreases with QQ at a long SRT. The microbial community appears to be responsible for such MBR behaviors. Several bacterial species belonging to the biofilm-forming group are dominant after disturbance, resulting in substantive membrane fouling. However, the balance between the bacterial species plays a key role in MBR fouling propensity when stabilized. Koflera flava becomes dominant with QQ, leading to reduced membrane fouling. QQ makes the MBR microbial community more diverse, while lowering its richness. QQ with long SRT would be a favorable operational strategy for effective MBR fouling control.
format	article
author	Syed Salman Ali Shah Luigi De Simone Giuseppe Bruno Hyeona Park Kibaek Lee Massimiliano Fabbricino Irini Angelidaki Kwang-Ho Choo
author_facet	Syed Salman Ali Shah Luigi De Simone Giuseppe Bruno Hyeona Park Kibaek Lee Massimiliano Fabbricino Irini Angelidaki Kwang-Ho Choo
author_sort	Syed Salman Ali Shah
title	Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors
title_short	Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors
title_full	Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors
title_fullStr	Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors
title_full_unstemmed	Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors
title_sort	quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/229a5627ad364e748190a4b21f54bb3e
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Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors

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