Pluripotency of endogenous AHL-mediated quorum sensing in adaptation and recovery of biological nitrogen removal system under ZnO nanoparticle long-term exposure

Gao, Huan; Ye, Jinyu; Zhao, Runyu; Zhan, Manjun; Yang, Guangping; Yu, Ran

doi:10.1016/j.scitotenv.2022.156911

Cited by 18 publications

(4 citation statements)

References 49 publications

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“…or Thauera sp.) which have been described as early biofilm colonizers and important EPS producers (Gao et al, 2022; Katharios-Lanwermeyer et al, 2014; Liébana et al, 2016) and commonly detected during the initial phases of granulation (Liébana et al, 2019; Weissbrodt et al, 2012; Xia et al, 2018). A diverse community of microeukaryotes was also present, mostly protozoa with different feeding modes and motility which promote microbial activity and aggregation against predation (Yang et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Section: The Initial Granulation Stage Is Characterized By Rapid Comm...mentioning

confidence: 99%

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Community successional patterns and inter-kingdom interactions during granular biofilm development

de Celis,

Modin,

Arregui

et al. 2024

Preprint

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Aerobic granular sludge is a compact and efficient biofilm process used for wastewater treatment which has received much attention and is currently being implemented worldwide. The microbial associations and their ecological implications occurring during granule development, especially those involving inter-kingdom interactions, are poorly understood. In this work, we monitored the prokaryote and eukaryote community composition and structure during the granulation of activated sludge for 343 days in a sequencing batch reactor (SBR), and investigated the influence of abiotic and biotic factors on the granule development. Sludge granulation was accomplished with low-wash out dynamics at long settling times, allowing for the microbial communities to adapt to the SBR environmental conditions. The sludge granulation and associated changes in microbial community structure could be divided into three stages: floccular, intermediate, and granular. The eukaryotic and prokaryotic communities showed parallel successional dynamics, with three main sub-communities identified for each kingdom, dominating in each stage of sludge granulation. Although inter-kingdom interactions were shown to affect community succession during the whole experiment, during granule development random factors like the availability of settlement sites or drift acquired increasing importance. The prokaryotic community was more affected by deterministic factors, including reactor conditions, while the eukaryotic community was to a larger extent shaped by biotic interactions (including inter-kingdom interactions) and stochasticity.

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Section: Discussionmentioning

confidence: 99%

Section: The Initial Granulation Stage Is Characterized By Rapid Comm...mentioning

confidence: 99%

Community successional patterns and inter-kingdom interactions during granular biofilm development

de Celis,

Modin,

Arregui

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…For example, in shortterm exposure experiments (6 h), ZnO NPs at concentrations of 1 mg/L, 25 mg/L, and 50 mg/L all showed dose-dependent inhibitory effects on the TN removal performance of activated sludge but had no inhibitory effect on ammonia nitrogen removal [54]. However, after long-term exposure to 10 mg/L of ZnO NPs for 45 days, the reactor showed an almost complete loss of TN and the ammonia nitrogen removal performance [55]. Similarly, in the study of aerobic granular sludge, He et al found that short-term exposure to 10 mg/L of ZnO NPs resulted in a decrease of 16.4% and 5.7% in the removal efficiencies of TIN and ammonia nitrogen, respectively, compared to the control group [56], while long-term exposure further reduced the removal rates of TIN and ammonia nitrogen, with a decrease of about 25.2% and 7.4%, respectively, compared to the control group [57].…”

Section: Effects Of the Exposure Mode Of Nano-zno On Bnr Processmentioning

confidence: 96%

“…Furthermore, appropriately regulating the operational conditions of the BNR system can enhance its adaptability to nano-ZnO. For instance, Gao et al discovered that endogenous N-acyl-homoserine lactone (AHL)-based quorum sensing regulation is advantageous for the adaptability of the BNR system to ZnO NP exposure [55]. By externally adding AHLs (N-Butyryl-DL-homoserine lactone, N-hexanoyl-L-homoserine lactone, and N-Decanoyl-L-homoserine lactone) to the BNR system, the ammonia oxidation process damaged by ZnO NPs can be effectively recovered [106].…”

Section: Artificial Way To Enhance the Adaptability Of Nitrogen Remov...mentioning

confidence: 99%

The Inhibition of Engineered Nano-ZnO in the Biological Nitrogen Removal Process: A Review

Ma,

et al. 2023

Water

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Engineered nano-ZnO is extensively utilized in both production and daily life, leading to its inevitable entry into the wastewater treatment system through various pathways. Nitrogen removal microorganisms in wastewater treatment systems are highly susceptible to environmental impacts. The antibacterial properties of nano-ZnO can impede the biological nitrogen removal (BNR) process and adversely affect the nitrogen removal performance. A comprehensive understanding of the inhibitory effect and mechanism of nano-ZnO on the BNR process is crucial in devising appropriate countermeasures to ensure optimal nitrogen removal performance. This review provides an overview of the sources of nano-ZnO in the environment, its impact on the BNR process, and the inhibition mechanism, and proposes potential methods that can mitigate the inhibitory effect of nano-ZnO. Additionally, future prospects are also discussed. This review serves as a foundation for a deeper understanding of the inhibition of engineered nano-ZnO on the BNR process and aids in guiding efforts to maintain the nitrogen removal performance in the presence of engineered nano-ZnO.

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New insights into exogenous N-acyl-homoserine lactone manipulation in biological nitrogen removal system against ZnO nanoparticle shock

Gao

Zhao

et al. 2023

Bioresource Technology

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Pluripotency of endogenous AHL-mediated quorum sensing in adaptation and recovery of biological nitrogen removal system under ZnO nanoparticle long-term exposure

Cited by 18 publications

References 49 publications

Community successional patterns and inter-kingdom interactions during granular biofilm development

Community successional patterns and inter-kingdom interactions during granular biofilm development

The Inhibition of Engineered Nano-ZnO in the Biological Nitrogen Removal Process: A Review

New insights into exogenous N-acyl-homoserine lactone manipulation in biological nitrogen removal system against ZnO nanoparticle shock

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