Characterization of nitrous oxide emissions from a thermophilic denitrifying bacterium Chelatococcus daeguensis TAD1 in an aerated sequencing batch reactor

Han, Li; Pan, Menglan; Zhou, Shaofeng; Huang, Shaobin; Zhang, Yongqing

doi:10.1016/j.bej.2016.04.033

Cited by 7 publications

(5 citation statements)

References 43 publications

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“…(c)]. It was found that N 2 O emission peaked under slightly alkaline conditions, which was consistent with the findings for A. faeclis p., but different from those for Chelatococcus daeguensis TAD1 . Generally, overly acidic conditions would seriously constrict the activity of the isolates, and induce massive N 2 O emission caused by chemo‐denitrification .…”

Section: Resultscontrasting

confidence: 57%

“…It was found that N 2 O emission peaked under slightly alkaline conditions, which was consistent with the findings for A. faeclis p., 39 but different from those for Chelatococcus daeguensis TAD1. 40 Generally, overly acidic conditions would seriously constrict the activity of the isolates, and induce massive N 2 O emission caused by chemo-denitrification. 39 In the present study, a slightly alkaline environment facilitated N 2 O emission, possibly due to the strong acid resistance of strain YH and the low accumulation of intermediates during the HNAD process.…”

Section: Ammonium Removal Kinetics Of Strain Yh Under Different Cultumentioning

confidence: 99%

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Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Liu

Wang

Xiao

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Heterotrophic nitrifying bacteria (HNB) have rapid growth rate, high activity and strong anti‐shock ability. These attributes are advantageous in engineering applications, yet the use of HNB is restricted by lack of clarity about the kinetics and metabolic mechanisms involved. Thus, nitrogen conversion characteristics, kinetics and N2O production of the HNB Pseudomonas putida YH were evaluated. RESULTS Strain YH exhibited superior heterotrophic nitrification‐aerobic denitrification (HNAD) ability in treating nitrogenous wastewater, with maximum removal rates of 10.07, 8.86 and 8.78 mg L−1 h−1 for NH4+–N, NO3−–N and NO2−–N, respectively. Mass balance analysis demonstrated that the removed TN was mainly due to bacterial assimilation (53–55%) and conversion into gaseous N2 (34–39%), instead of nitrification intermediate accumulation and N2O emission. In addition, the kinetics of nitrogen degradation and cellular growth of strain YH exactly conformed to the modified Gompertz equation and the Logistic equation, respectively. Moreover, strain YH showed excellent adaptability to variations of temperature, pH, C:N ratio and initial NH4+–N concentration in terms of nitrogen removal and N2O emission. The highest NH4+–N removal rate was obtained at pH 7.0, temperature 30 °C and C:N ratio of 15. Furthermore, the heterotrophic nitrification ability was just partially deteriorated after the addition of inhibitors, which further proved the multiple metabolic pathways of heterotrophic nitrification by strain YH. CONCLUSION The results demonstrated that strain YH exhibited excellent abilities of HNAD, N2O emission control and tolerance to adverse conditions, indicating that strain YH can be an effective candidate for treating nitrogenous wastewater without secondary pollution. © 2019 Society of Chemical Industry

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Section: Resultscontrasting

confidence: 57%

Section: Ammonium Removal Kinetics Of Strain Yh Under Different Cultumentioning

confidence: 99%

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Liu

Wang

Xiao

et al. 2019

J of Chemical Tech & Biotech

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“…Samples were filtered through a 0.22-μm pore diameter membrane and were analyzed immediately. The nitrate-nitrogen content in the daily samples was measured using spectrophotometry, and the nitrite-nitrogen content was measured via spectrophotometry, with ethylene diamine dihydrochloride as the coupling agent [ 28 ].…”

Section: Methodsmentioning

confidence: 99%

“…content was measured via spectrophotometry, with ethylene diamine dihydrochloride as the coupling agent [28]. Microbiome bioinformatics were performed with QIIME2 2019.4 [29] with slight modification according to the official tutorials (https://docs.qiime2.org//2019.4/tutorials/).…”

Section: Plos Onementioning

confidence: 99%

Performance and microbial community analysis on nitrate removal in a bioelectrochemical reactor

Li,

Cui,

Wang

et al. 2023

PLoS ONE

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In this experiment, we took reflux sludge, sludge from an aeration tank, and soil from roots as microbial inoculating sources for an electrochemical device for denitrification with high-throughput sequencing on cathodic biofilms. The efficiency of nitrate nitrogen removal using different microbial inoculates varied among voltages. The optimal voltages for denitrification of reflux sludge, aeration tank sludge, and root soil were 0.7V, 0.5V, and 0.5V, respectively. Further analysis revealed that the respective voltages had a significant effect upon microbial growth from the respective inoculates. Proteobacteria and Firmicutes were the main denitrifying microbes. With the addition of low current (produced by the applied voltage), the Chao1, Shannon and Simpson indexes of the diversity of microorganisms in soil inoculation sources increased, indicating that low current can increase the diversity and richness of the microorganisms, while the reflux sludge and aeration tank sludge showed different changes. Low-current stimulation decreased microbial diversity to a certain extent. Pseudomonas showed a trend of decline with increasing applied voltage, in which the MEC (microbial electrolysis cell) of rhizosphere soil as inoculates decreased most significantly from 77.05% to 12.58%, while the MEC of Fusibacter showed a significant increase, and the sludge of reflux sludge, aeration tank and rhizosphere soil increased by 31.12%, 18.7% and 34.6%, respectively. The applied voltage also significantly increased the abundance of Azoarcus in communities from the respective inoculates.

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“…The nitrite accumulation ratio and TN removal were 20% and 13.6% lower than with sodium acetate . N2O emission from a thermophilic aerobic denitrifying bacterium, Chelatococcus daeguensis TAD1, was investigated under different C/N ratios and pH values (Li, Pan et al, 2016). The N2O emission factor was found to be 0.046%, indicating a promising new microbial resource for N removal at reduced GHG emissions.…”

Section: Ghg Emissions From Wwtpsmentioning

confidence: 99%

Gaseous Emissions from Wastewater Facilities

Koh¹,

Shaw²

2017

Water Environment Research

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A review of the literature published in 2016 on topics relating to gaseous emissions from wastewater facilities is presented. This review is divided into the following sections: odorant emissions from wastewater treatment plants (WWTPs); greenhouse gas (GHG) emissions from WWTPs; gaseous emissions from wastewater collection systems; physiochemical odor/emissions control methods; biological odor/emissions control methods; odor characterization/monitoring; and odor impacts/ risk assessments.

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Characterization of nitrous oxide emissions from a thermophilic denitrifying bacterium Chelatococcus daeguensis TAD1 in an aerated sequencing batch reactor

Cited by 7 publications

References 43 publications

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Performance and microbial community analysis on nitrate removal in a bioelectrochemical reactor

Gaseous Emissions from Wastewater Facilities

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Characterization of nitrous oxide emissions from a thermophilic denitrifying bacterium Chelatococcus daeguensis TAD1 in an aerated sequencing batch reactor

Cited by 7 publications

References 43 publications

Kinetic characteristics and N2O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Kinetic characteristics and N2O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Performance and microbial community analysis on nitrate removal in a bioelectrochemical reactor

Gaseous Emissions from Wastewater Facilities

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Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions

Kinetic characteristics and N₂O production of a heterotrophic nitrifying bacterium Pseudomonas putida YH capable of tolerating adverse environmental conditions