Interaction between perfluorooctanoic acid and aerobic granular sludge

Yang, Guojing; Zhang, Ni; Yang, Jingnan; Fu, Qizi; Wang, Yu; Wang, Dongbo; Tang, Li; Xia, Jingfen; Liu, Xuran; Li, Xiaoming; Yang, Qi; Liu, Yiwen; Wang, Qilin; Ni, Bing‐Jie

doi:10.1016/j.watres.2019.115249

Cited by 96 publications

(19 citation statements)

References 46 publications

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“…This was also confirmed by numerous studies by other researchers [37,38]. Wang et al (2010) explains the phenomenon of sorption by the interaction between positively charged metal ions and negatively charged EPS [39]. The increased efficiency of PAH degradation can therefore be associated with the impact of EPS, which increased the interaction of PAH with the Burkolderiales cells.…”

Section: Discussionsupporting

confidence: 70%

Heavy Metals as a Factor Increasing the Functional Genetic Potential of Bacterial Community for Polycyclic Aromatic Hydrocarbon Biodegradation

Staninska-Pięta

Czarny²,

Piotrowska-Cyplik

et al. 2020

Molecules

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The bioremediation of areas contaminated with hydrocarbon compounds and heavy metals is challenging due to the synergistic toxic effects of these contaminants. On the other hand, the phenomenon of the induction of microbial secretion of exopolysaccharides (EPS) under the influence of heavy metals may contribute to affect the interaction between hydrophobic hydrocarbons and microbial cells, thus increasing the bioavailability of hydrophobic organic pollutants. The purpose of this study was to analyze the impact of heavy metals on the changes in the metapopulation structure of an environmental consortium, with particular emphasis on the number of copies of orthologous genes involved in exopolysaccharide synthesis pathways and the biodegradation of hydrocarbons. The results of the experiment confirmed that the presence of heavy metals at concentrations of 50 mg·L−1 and 150 mg·L−1 resulted in a decrease in the metabolic activity of the microbial consortium and its biodiversity. Despite this, an increase in the biological degradation rate of polycyclic aromatic hydrocarbons was noted of 17.9% and 16.9%, respectively. An assessment of the estimated number of genes crucial for EPS synthesis and biodegradation of polycyclic aromatic hydrocarbons confirmed the relationship between the activation of EPS synthesis pathways and polyaromatic hydrocarbon biodegradation pathways. It was established that microorganisms that belong to the Burkholderiales order are characterized by a high representation of the analyzed orthologs and high application potential in areas contaminated with heavy metals and hydrocarbons.

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Section: Discussionsupporting

confidence: 70%

Heavy Metals as a Factor Increasing the Functional Genetic Potential of Bacterial Community for Polycyclic Aromatic Hydrocarbon Biodegradation

Staninska-Pięta

Czarny²,

Piotrowska-Cyplik

et al. 2020

Molecules

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“…Scholars have explored the granulation process from different perspectives and put forward the corresponding granulation model hypothesis, but unfortunately no uncontroversial conclusion has been reached [1]. Among these, the "extracellular polymeric substances (EPS) hypothesis" [15], the "metal ion hypothesis" [16], and the "signaling molecule hypothesis" [2] all emphasize that microorganisms can secrete viscous EPS, supplemented by metal ion chelation, to form "zoogloea" type AGS, which are granulated based on flocforming bacteria. The "Filamentous bacteria hypothesis" [2,15] proposes that filamentous bacteria, which hardly secrete EPS, can form "filamentous"-type AGS with a skeleton by wrapping each other through special filamentous shapes.…”

Section: Morphology Classification Of Agsmentioning

confidence: 99%

Structural Characteristics of Aerobic Granular Sludge and Factors That Influence Its Stability: A Mini Review

Hou

Gan²,

Chen

et al. 2021

Water

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Current extensive research on aerobic granular sludge (AGS) largely focuses on improving its microbial biodiversity, settlement behavior, nitrogen and phosphorus removal efficiency, and shock load resistance. Great challenges that have to be faced are the bottleneck of slow-speed granulation and easy disintegration after granulation, which are key to the extended application of AGS technology. In the present review, the typical morphological structures of AGS are firstly summarized as well as the granulation model hypotheses, and then, we analyze the dominant microflora and their spatial distribution features. The influencing factors on particle structure stability are discussed thereafter on a macro and micro scale. Prospects and future research trends are also discussed based on the current study results for AGS technology.

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“…The negative effect of 2‐CP in the ammonium‐oxidizing process may be related to inhibition on the AMO enzyme, since it has been previously evidenced that this enzyme participates in 2‐CP consumption 23 and/or in the damages exerted in cellular membrane, and hence, in the enzymatic activity of AMO 16 . Regarding to nitrite oxidation process, severe inhibitory effects on nitrite oxidation process have also recently been reported in aerobic granular sludge exposed to increasing concentrations of perfluoro octanoic acid 40 . Interestingly, even with the decrease in qNH 4 + ‐N when 40 or 60 mg 2‐CP‐C/L were fed to the SBRs, the specific rates for ammonium consumption remained as similar values among them (e.g., average ranging from 12.93 to 16.58 mg NH 4 + ‐N consumed/g protein d; α = 0.05).…”

Section: Resultsmentioning

confidence: 93%

“…16 Regarding to nitrite oxidation process, severe inhibitory effects on nitrite oxidation process have also recently been reported in aerobic granular sludge exposed to increasing concentrations of perfluoro octanoic acid. 40 Interestingly, even with the decrease in qNH 4 + -N when 40 or 60 mg 2-CP-C/L were fed to the SBRs, the specific rates for ammonium consumption remained as similar values among them (e.g., average ranging from 12.93 to 16.58 mg NH 4 + -N consumed/g protein d; ⊍ = 0.05). A similar behavior was noted on the qNO 3 − -N values (e.g., average ranging from 17.82 to 22.57 mg NO 3 − -N consumed/g protein d; ⊍ = 0.05), indicating that, under these conditions, the inhibitory effect of the chlorinated compound on the ammonium-and nitrite-oxidizing processes remained stable.…”

mentioning

confidence: 84%

Population dynamics of nitrifying sludge supplemented with 2‐chlorophenol in SBR reactors

Martínez-Jardines

González-Robles

González‐Márquez

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND The metabolic improvement and reduction of the inhibitory effect of 2‐chlorophenol (2‐CP) on the nitrification process occurring in nitrifying SBR systems can be associated with changes in the microbial community. The physiologic, kinetic, and microbial population behaviors of two nitrifying sludges were evaluated in two parallel sequencing batch reactors (SBR1 and SBR2) amended with 2‐CP. Seven cycles were performed with 20 to 60 mg 2‐CP‐C/L. RESULTS Ammonium‐oxidizing and nitrite‐oxidizing processes were physiologically disturbed in SBR1 and SBR2 due to increased 2‐CP concentrations, attaining ammonium consumption efficiencies (ENH4+‐N) and nitrate yields (YNO3−‐N) as low as 38% and 0.32 mg NO3−‐N/mg NH4+‐N consumed, respectively. Nevertheless, in cycle 7, both sludges recovered their physiological capacities, as ENH4+‐N of 100% and YNO3−‐N > 0.94 mg NO3−‐N/mg NH4+‐N consumed were achieved in both nitrifying processes. Increase in 2‐CP concentration also affected the kinetics of nitrification processes, wherein a higher inhibition on the specific rate of ammonium‐oxidizing process was observed. Despite the increase in 2‐CP concentration, no predominance of species was noted, as the bacterial community evenness index remained above 0.97, whereas the richness index increased along with SBR operation. CONCLUSION The stable, complete, and efficient nitrifying process achieved in both SBRs could be related to the higher bacterial community richness and to the regular maintenance of ammonium and nitrite oxidizing bacteria tolerant to 2‐CP along experimentation. Total 2‐CP consumption might be associated with ammonium‐oxidizing and/or heterotrophic bacteria related to Nitrosospira, Luteimonas, and Cohnella. © 2021 Society of Chemical Industry (SCI).

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Interaction between perfluorooctanoic acid and aerobic granular sludge

Cited by 96 publications

References 46 publications

Heavy Metals as a Factor Increasing the Functional Genetic Potential of Bacterial Community for Polycyclic Aromatic Hydrocarbon Biodegradation

Heavy Metals as a Factor Increasing the Functional Genetic Potential of Bacterial Community for Polycyclic Aromatic Hydrocarbon Biodegradation

Structural Characteristics of Aerobic Granular Sludge and Factors That Influence Its Stability: A Mini Review

Population dynamics of nitrifying sludge supplemented with 2‐chlorophenol in SBR reactors

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