Importance of abiotic hydroxylamine conversion on nitrous oxide emissions during nitritation of reject water

Soler-Jofra, Aina; Stevens, Berber; Hoekstra, Maaike; Picioreanu, Cristian; Sorokin, D. Yu.; Loosdrecht, M.C.M. van; Pérez, Julio

doi:10.1016/j.cej.2015.11.073

Cited by 64 publications

(59 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…20 mg NH 3 -N*gVSS -1 *h -1 ) may also lead to a transient accumulation of NH 2 OH [42]. NH 2 OH has can react abiotically with free nitrous acid (HNO 2 ) to generate N 2 O at concentrations as low as 0.06 mg NH 2 OH-N/L [43]. A fraction of N 2 O produced during aerated phases in this study (AORs of approx.…”

Section: N 2 O Production In Aerated Phases: Correlation Of Specific mentioning

confidence: 70%

“…However, the reaction kinetics of abiotic N 2 O production strongly depend on pH, which determines the concentration of HNO 2 , the reaction partner. At pH 7.6 the abiotic NH 2 OH depletion rate is reported to be 30-times lower, than at acidic pH of 4.3 [43]. Considering the relatively high pH of approx.…”

Section: N 2 O Production In Aerated Phases: Correlation Of Specific mentioning

confidence: 88%

See 1 more Smart Citation

Nitrous oxide production in intermittently aerated Partial Nitritation-Anammox reactor: oxic N2O production dominates and relates with ammonia removal rate

Blum

Jensen

Smets

2018

Chemical Engineering Journal

View full text Add to dashboard Cite

Section: N 2 O Production In Aerated Phases: Correlation Of Specific mentioning

confidence: 70%

Section: N 2 O Production In Aerated Phases: Correlation Of Specific mentioning

confidence: 88%

Nitrous oxide production in intermittently aerated Partial Nitritation-Anammox reactor: oxic N2O production dominates and relates with ammonia removal rate

Blum

Jensen

Smets

2018

Chemical Engineering Journal

View full text Add to dashboard Cite

“…During denitrification, N2O is emitted by both autotrophic AOB via the nitrifier denitrification pathway, and heterotrophic denitrifiers via the heterotrophic denitrification pathway (Kampschreur et al 2009b, Law et al 2012b. In addition, it has been realized more recently that the abiotic/biotic N-nitrosation hybrid N2O production pathway can also contribute significantly to the N2O emission under some extreme circumstances when NO2and NH2OH concentrations are high (Soler-Jofra et al 2016, Terada et al 2017.…”

Section: Current Knowledge About N 2 O Production Pathwaysmentioning

confidence: 99%

“…In addition, N2O can also be formed chemically from NH2OH and NO2via abiotic reactions (Harper Jr et al 2015, Soler-Jofra et al 2016, Terada et al 2017. Different N2O production pathways often occur simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Quantifying nitrous oxide production pathways in wastewater treatment systems using isotope technology – A critical review

Duan

Erler

et al. 2017

Water Research

View full text Add to dashboard Cite

Nitrous oxide (NO) is an important greenhouse gas and an ozone-depleting substance which can be emitted from wastewater treatment systems (WWTS) causing significant environmental impacts. Understanding the NO production pathways and their contribution to total emissions is the key to effective mitigation. Isotope technology is a promising method that has been applied to WWTS for quantifying the NO production pathways. Within the scope of WWTS, this article reviews the current status of different isotope approaches, including both natural abundance and labelled isotope approaches, to NO production pathways quantification. It identifies the limitations and potential problems with these approaches, as well as improvement opportunities. We conclude that, while the capabilities of isotope technology have been largely recognized, the quantification of NO production pathways with isotope technology in WWTS require further improvement, particularly in relation to its accuracy and reliability.

show abstract

“…Apart from the biological N 2 O production pathways, abiotic N 2 O generation from the reaction between NH 2 OH and free nitrous acid (FNA) could be a recognized resource for N 2 O production3233. However, compared to these two studies, the NH 2 OH concentration, predicted by the mathematical model, and the FNA, calculated based on pH, temperature and NO 2 − were several orders of magnitude lower.…”

Section: Resultsmentioning

confidence: 99%

Nitrous Oxide Production in a Granule-based Partial Nitritation Reactor: A Model-based Evaluation

Peng

Sun

Liu

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Sustainable wastewater treatment has been attracting increasing attentions over the past decades. However, the production of nitrous oxide (N2O), a potent GHG, from the energy-efficient granule-based autotrophic nitrogen removal is largely unknown. This study applied a previously established N2O model, which incorporated two N2O production pathways by ammonia-oxidizing bacteria (AOB) (AOB denitrification and the hydroxylamine (NH2OH) oxidation). The two-pathway model was used to describe N2O production from a granule-based partial nitritation (PN) reactor and provide insights into the N2O distribution inside granules. The model was evaluated by comparing simulation results with N2O monitoring profiles as well as isotopic measurement data from the PN reactor. The model demonstrated its good predictive ability against N2O dynamics and provided useful information about the shift of N2O production pathways inside granules for the first time. The simulation results indicated that the increase of oxygen concentration and granule size would significantly enhance N2O production. The results further revealed a linear relationship between N2O production and ammonia oxidation rate (AOR) (R2 = 0.99) under the conditions of varying oxygen levels and granule diameters, suggesting that bulk oxygen and granule size may exert an indirect effect on N2O production by causing a change in AOR.

show abstract

Importance of abiotic hydroxylamine conversion on nitrous oxide emissions during nitritation of reject water

Cited by 64 publications

References 29 publications

Nitrous oxide production in intermittently aerated Partial Nitritation-Anammox reactor: oxic N2O production dominates and relates with ammonia removal rate

Nitrous oxide production in intermittently aerated Partial Nitritation-Anammox reactor: oxic N2O production dominates and relates with ammonia removal rate

Quantifying nitrous oxide production pathways in wastewater treatment systems using isotope technology – A critical review

Nitrous Oxide Production in a Granule-based Partial Nitritation Reactor: A Model-based Evaluation

Contact Info

Product

Resources

About