Role and application of quorum sensing in anaerobic ammonium oxidation (anammox) process: A review

Zhang, Quan; Fan, Nian-Si; Fu, Jin-Jin; Huang, Bao-Cheng; Jin, Ren‐Cun

doi:10.1080/10643389.2020.1738166

Cited by 58 publications

(13 citation statements)

References 99 publications

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“…Previous studies proved that C6-HSL and C8-HSL widely exist in Anammox systems and may affect nitrogen removal and sludge activity (Feng et al, 2019;Zhang, Miao, et al, 2020;Zhang, Fan, et al, 2020). This study further confirmed that C8-HSL plays an important role in the stability of Anammox granules, while C6-HSL and 3OC8-HSL affected the activity of Anammox granules.…”

Section: Effects Of Exogenous C6-hsl C8-hsl and 3oc8-hsl On Granule Activitysupporting

confidence: 81%

“…In addition, it was revealed that 3OC8-HSL also participated in regulating on the activity of the granules at low temperatures. Unfavorable environment will stimulate the activity of the microbial QS system to adjust the microorganisms to adapt to the unfavorable environmental conditions (Zhang, Miao, et al, 2020;Zhang, Fan, et al, 2020). In this study, when the operation temperature was in the range of 11-16°C, the addition of C8-HSL could improve significantly granule stability, but which had no obvious effect on granule stability when the operation temperature was above 23°C.…”

Section: Effects Of Exogenous C6-hsl C8-hsl and 3oc8-hsl On Granule Activitymentioning

confidence: 77%

“…On day 80, the SAA and crude enzyme activity of R1-granules recovered to 1.21 kg-TN/(gVSS•d) and 1.7 µM cytochrome C/min/mg protein, close to the level of day 10. Zhang, Miao, et al (2020) and Zhang, Fan, et al (2020)) showed that when the environment temperature is lower than 15°C, the activity of Anammox microorganisms will be severely inhibited. And this study obtained the similar conclusion.…”

Section: Effect Of Adding Ahls Inhibitor On the Activity Of Anammox Granules At Different Operation Temperaturesmentioning

confidence: 99%

“…Therefore, Anammox process is suitable for removing nitrogen from sludge digestion liquid with high temperature (25-35°C) (Zhang, Miao, et al, 2020;Zhang, Fan, et al, 2020). However, the average temperature of mainstream domestic sewage is significantly lower than the optimal temperature of Anammox bacteria, especially for winter (Zhang, Miao, et al, 2020;Zhang, Fan, et al, 2020). This limits the wide application of Anammox technology in the field of mainstream sewage treatment.…”

Section: Introductionmentioning

confidence: 99%

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Effects of AHLs inhibitors and exogenous AHLs on the stability and activity of Anammox granules at low temperatures

Zhang

Zhang²,

Sun³

et al. 2021

Water Environment Research

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This study investigated the relationship between acyl homoserine lactones (AHLs)based quorum sensing (QS) and the properties of Anammox granular sludge at low temperatures (11-23°C). Results indicated that adding different concentrations of AHLs inhibitors reduced the content of N-hexanoyl-dl-homoserine lactone (C6-HSL) and N-octanoyl-dl-homoserinelactone (C8-HSL) in Anammox granules on different degrees at different operation temperatures, which led to the deterioration of granules stability and activity. The important role of endogenous C6-HSL and C8-HSL signals in maintaining Anammox granular sludge stability and activity in low-temperature conditions was revealed. In addition, in the process of reducing operation temperatures, another type of AHL signal (N-(3-oxooctanoyl)-l-homoserine lactone, 3OC8-HSL) was released by Anammox granules. The effects of exogenous C8-HSL on the strength, average diameter, and density of Anammox granules were closely related to the operation temperature. When the operation temperature ranged from 11°C to 16°C, the stability of granules could be significantly improved by exogenous C8-HSL. In addition, the addition of C6-HSL and 3OC8-HSL promoted the activity of Anammox granules when the operation temperatures of the reactors were 11-23°C. This study proposed a novel approach to improve the properties of Anammox granules at low temperatures from the perspective of QS. • Practitioner points• Endogenous AHLs played an important role in maintaining the activity and stability of Anammox granules at 11-23°C. • Exogenous C8-HSL improved the granules stability at the low temperature of 11-16°C. • Exogenous C6-HSL or 3OC8-HSL promoted the granules activity at 11-23°C.• Supply a novel way to improve the Anammox granules performance at low temperatures.

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Section: Effects Of Exogenous C6-hsl C8-hsl and 3oc8-hsl On Granule Activitysupporting

confidence: 81%

Section: Effects Of Exogenous C6-hsl C8-hsl and 3oc8-hsl On Granule Activitymentioning

confidence: 77%

Section: Effect Of Adding Ahls Inhibitor On the Activity Of Anammox Granules At Different Operation Temperaturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of AHLs inhibitors and exogenous AHLs on the stability and activity of Anammox granules at low temperatures

Zhang

Zhang²,

Sun³

et al. 2021

Water Environment Research

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“…However, there are problems in practical application such as long start-up period and susceptibility to environmental variations. Many physiological characteristics of AnAOB have been proved to be related to QS, including the specific anammox activity, growth rate and EPS production, which directly affect the performance of anammox process (Zhang et al 2020). At present, a purebred strain of AnAOB has not been obtained, which makes it difficult for the related research.…”

Section: Anammoxmentioning

confidence: 99%

Roles of autoinducer-2 mediated quorum sensing in wastewater treatment

Liu

Feng

2021

Water Science and Technology

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Quorum sensing (QS) is considered to be a promising regulation method for biological wastewater treatment (WWT) due to its regulation in extracellular substances (EPS) production, biofilm formation, granulation, colonization and bacterial activity and stability. Recently, autoinducer-2 (AI-2), a kind of interspecies communication QS signal molecule, is increasingly reported for its roles in regulating bacterial gene expression and aggregation. Consequentially, AI-2 mediated QS system is considered as a promising regulatory approach in WWT processes. This article systematically reviews the effects of AI-2-mediated QS system on bacterial behavior and its high potential for real-world applications in different WWT systems. Given the extensive presence of AI-2, AI-2 mediated QS could cooperate with other signal molecules in WWT processes, which suggests that the interactions among multiple signal molecules might be underestimated in the previous studies. The differences between AI-2 and AHL signaling molecules are also compared. Furthermore, the attempts of AI-2 regulated QS in pollution control of different WWT systems are summarized, while some challenges and defects are still required targeted research in the future.

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Effects of interactions between quorum sensing and quorum quenching on microbial aggregation characteristics in wastewater treatment: A review

Wang

Chen

et al. 2021

Water Environment Research

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Due to the increasingly urgent demand for effective wastewater denitrification and dephosphorization systems, there is a need to improve the performance of existing biological treatment technologies. As a bacteria‐level communication mechanism, quorum sensing (QS) synchronizes gene expression in a density‐dependent manner and regulates bacterial physiological behavior. On this basis, the QS‐based bacterial communication mechanism and environmental factors affecting QS are discussed. This paper reviews the influence of QS on sludge granulation, biofilm formation, emerging contaminants (ECs) removal, and horizontal gene transfer in sewage treatment system. Furthermore, the QS inhibition strategies are compared. Based on the coexistence and balance of QQ and QS in the long‐term operation system, QQ, as an effective tool to regulate the growth density of microorganisms, provides a promising exogenous regulation strategy for residual sludge reduction and biofilm pollution control. This paper reviews the potential of improving wastewater treatment efficiency based on QS theory and points out the feasibility and prospect of exogenous regulation strategy. Practitioner Points The mechanism of bacterial communication based on QS and the environmental factors affecting QS were discussed. The application of QS and QQ in improving the sludge performance of biological treatment systems was described. The significance of QS and QQ coexistence in sewage treatment process was described.

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Role and application of quorum sensing in anaerobic ammonium oxidation (anammox) process: A review

Cited by 58 publications

References 99 publications

Effects of AHLs inhibitors and exogenous AHLs on the stability and activity of Anammox granules at low temperatures

Effects of AHLs inhibitors and exogenous AHLs on the stability and activity of Anammox granules at low temperatures

Roles of autoinducer-2 mediated quorum sensing in wastewater treatment

Effects of interactions between quorum sensing and quorum quenching on microbial aggregation characteristics in wastewater treatment: A review

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