Journal article
Exploring interactions between quorum sensing communication and microbial development in anammox membrane bioreactor
Journal of environmental chemical engineering, Vol.11(2), 109339
04/2023
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Abstract
The long duration required to enrich bacteria that perform anaerobic ammonium oxidation (anammox) limits their wide application in wastewater treatments. Anammox enrichment requires extensive microbial development, but the mechanisms involved are still being studied. Here, a total nitrogen removal rate of 1.22 kg N/m3/day was obtained over 280 days when anammox was enriched in a membrane bioreactor (MBR). Interactions between quorum sensing (QS) and microbial community development were investigated. Acyl-homoserine lactones (AHLs) were detected in the MBR effluent, with C8-HSL having the highest concentration (2.05 ng/L). The specific anammox activity (SAA) of the biomass increased from 335.8 (± 16.4) mg NH4+-N/g VSS/day to 382.9 (± 19.6) mg NH4+-N/g VSS/day with 0.1 μM C8-HSL addition. Anammox bacteria from the genus Candidatus Brocadia were enriched in the MBR. Metagenomic analysis suggested quorum sensing dependent on AHL and c-di-GMP (bis-[3′−5′]-cyclic dimeric guanosine monophosphate) contributed to microbial development. C-di-GMP-dependent quorum sensing may impact the formation of extracellular polymeric substances (EPS) and cell motility of biomass.
Details
- Title
- Exploring interactions between quorum sensing communication and microbial development in anammox membrane bioreactor
- Creators
- Mengjiao Gao - University of AlbertaXin Zou - University of AlbertaHongyu Dang - University of AlbertaAbdul Nayeem Mohammed - University of AlbertaSen Yang - University of AlbertaYun Zhou - University of AlbertaYiduo Yao - University of AlbertaHengbo Guo - University of AlbertaYang Liu - University of Alberta
- Publication Details
- Journal of environmental chemical engineering, Vol.11(2), 109339
- Publisher
- Elsevier Ltd
- Identifiers
- 991013127411202368
- Copyright
- © 2023 Elsevier Ltd. All rights reserved.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article