Stoichiometry and kinetics of the anaerobic ammonium oxidation (Anammox) with trace hydrazine addition

Yao, Zongbao; Lu, Peili; Zhang, Daijun; Wan, Xinyu; Li, Yulian; Peng, Shuchan

doi:10.1016/j.biortech.2015.08.098

Cited by 37 publications

(17 citation statements)

References 29 publications

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“…Throughout the 17-day span of the three sampling times, the DIN concentrations and their isotopic signatures were stable (Table 1) (Yao et al, 2015). Isaka et al (2017) also reported that ΔNO 2 -/ ΔNH 4 + was 1.23 from this anammox plant, which indicates the appropriate performance of anammox in ANX reactor.…”

Section: Anammox Plant Datamentioning

confidence: 76%

Nitrogen and Oxygen Isotope Signatures of Nitrogen Compounds during Anammox in the Laboratory and a Wastewater Treatment Plant

et al. 2020

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Section: Anammox Plant Datamentioning

confidence: 76%

Nitrogen and Oxygen Isotope Signatures of Nitrogen Compounds during Anammox in the Laboratory and a Wastewater Treatment Plant

et al. 2020

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“…The reduction of NO

_{3}^{-}

and SO

_{4}^{2 -}

inhibits methanogenesis with the inhibition half‐saturation constant of SO

_{4}^{2 -}

(

K_{{ISO}_{4}^{2 -}}

) retrieved from experiments in Schönheit et al () (Figure S1d in the supporting information). The biokinetic parameters for R25 were estimated from Yao et al ()…”

Section: Methodsmentioning

confidence: 99%

A Mechanistic Analysis of Wetland Biogeochemistry in Response to Temperature, Vegetation, and Nutrient Input Changes

2020

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Wetlands represent the most significant natural greenhouse gas (GHG) source and their annual emissions tightly depend on climatic and anthropogenic factors. Biogeochemical processes occurring in wetlands are still poorly described by mechanistic models and hence their dynamic response to environmental changes are weakly predicted. We investigated wetland GHG emissions, relevant electron acceptors and donors concentrations, and microbial composition resulting from changes in temperature, CH 4 plant uptake efficiency, and SO 2− 4 deposition using a mechanistic biogeochemical model (here called BAMS3) that integrates the carbon (C), nitrogen (N), and sulfur (S) cycles. Parameters constraining the coupled C-N-S cycles were retrieved from controlled experiments and were validated against independent field data of CH 4 emissions, and CH 4 (aq) and SO 2− 4 concentration profiles in a wetland in southern Michigan, USA (Shannon & White, 1994, http://hdl.handle.net/102.100.100/236252? index=1). We found that +1.75 • C increase in temperature leads to 22% and 30% increment in CH 4 and N 2 O emissions, respectively. A decrease in the CH 4 plant uptake efficiency causes the prevalent CH 4 emission pathway to become diffusion mediated and resulted in 50% increase in the daily average CH 4 emissions. Finally, a decreasing SO 2− 4 deposition rate can increase CH 4 emissions up to 5%. We conclude that the increasing GHG emissions from wetlands is a result of both environmental and anthropogenic causes rather than global warming alone. An increase in model complexity does not necessary improve the estimation of GHG emissions but it aids interpretation of intermediate processes to a greater detail. Plain Language SummaryWetlands are the largest natural source of greenhouse gasses; hence, climate change and human development have become a major concern for the conservation of these ecosystems. In this study, we explore the effect of rising temperature, plants community, and changes in nutrient input rate on the emission rate and quality in a wetland. The assessment was conducted using a mechanistic model that accounts for carbon, nitrogen, and sulfur cycles on test scenarios. The model was initially tested on field data of a wetland in southern Michigan, and then used for scenarios predictions. Results suggest that increasing the average soil temperature leads to a substantial increase in greenhouse gas emissions; in particular, methane emissions increase by 22%. Methane emissions are also affected by the plant composition, which controls the main emission pathway; small composition changes can induce high emissions variations. Finally, we showed how a change in atmospheric sulfate deposition to wetlands can control the methane emissions. We conclude that modeling coupled chemical, biological, and physical processes helped to describe wetland nutrients dynamics under both climate change and anthropogenic factors.

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“…During the preparation, dissolved oxygen (DO) remained below the detection limit to keep anaerobic condition by flushing with nitrogen gas (99.99%). In the batch test coupled with anammox, anammox bacteria (100 mL, SS = 1.65 g/L, VSS = 0.77 g/L) derived from the anammox bioreactor in a previous study (Yao et al 2015 ) was inoculated into reactor B.…”

Section: Methodsmentioning

confidence: 99%

Long-term nitrate removal through methane-dependent denitrification microorganisms in sequencing batch reactors fed with only nitrate and methane

Li¹,

Lu²,

Chai³

et al. 2018

AMB Expr

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Denitrifying anaerobic methane oxidation (damo) bioprocesses can remove nitrate using methane as the electron donor, which gains great concern due to the current stringent discharge standard of nitrogen in wastewater treatment plants. To obtain an engineering acceptable nitrogen removal rate (NRR) and demonstrate the long-term stable ability of damo system under conditions of nitrate and methane, two sequencing batch reactors (SBRs) fed with only nitrate and methane were operated for more than 600 days at 30 °C. The NRR of 21.91 ± 0.73 mg NO3−-N L−1 day−1 was obtained which is, to the best of our knowledge, the highest rate observed in the literatures under such conditions. The temperature was found to significantly affect the system performance. Furthermore, the microbial community was analyzed by using real-time PCR technique. The results showed that the microbial consortium contained damo archaea and bacteria. These two microbes cooperated to maintain the long-term stability. And the number of damo archaea was higher than that of damo bacteria with the ratio of 1.77. By using methane as the electron donor, damo archaea reduced nitrate to nitrite coupled to methane oxidation and damo bacteria reduce the generated nitrite to nitrogen gas. The first step of nitrate to nitrite taken by damo archaea might be the limiting step of this cooperation system. SBR could be a suitable reactor configuration to enrich slow-growing microbes like damo culture. These results demonstrated the potential application of damo processes for nitrogen removal of wastewater containing low C/N ratios.

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Stoichiometry and kinetics of the anaerobic ammonium oxidation (Anammox) with trace hydrazine addition

Cited by 37 publications

References 29 publications

Nitrogen and Oxygen Isotope Signatures of Nitrogen Compounds during Anammox in the Laboratory and a Wastewater Treatment Plant

Nitrogen and Oxygen Isotope Signatures of Nitrogen Compounds during Anammox in the Laboratory and a Wastewater Treatment Plant

A Mechanistic Analysis of Wetland Biogeochemistry in Response to Temperature, Vegetation, and Nutrient Input Changes

Long-term nitrate removal through methane-dependent denitrification microorganisms in sequencing batch reactors fed with only nitrate and methane

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