Evaluating the potential for dissimilatory nitrate reduction by anammox bacteria for municipal wastewater treatment

Castro-Barros, Celia M.; Jia, Mingsheng; Loosdrecht, Mark C.M. van; Volcke, Eveline; Winkler, Mari K.H.

doi:10.1016/j.biortech.2017.02.063

Cited by 117 publications

(27 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maximum specific anammox activity (0.035 g N/(g VSS·h) was obtained in an SBR when the nitrogen concentration was controlled close to the stoichiometric nitrite/ammonium molar ratio (1.32) [91]. Free ammonia level of [35][36][37][38][39][40] mg N/L [43,92] or 20-30 mg N/L [93] could decrease anammox activity by up to 50%. Both ammonium and nitrite concentrations in the range of several hundred milligrams per liter [26] to several grams per liter [34] can influence anammox activity regardless of loading rates.…”

Section: Nitrogen Loadingmentioning

confidence: 94%

“…The mainstream process is known to operate at a lower temperature, mostly around 15 • C, to achieve a high nitrogen removal efficiency (70%-90%) at low oxygen concentrations [38]. However, a previous study revealed that the application of the mainstream process with the PN/A process at low temperatures of 10-15 • C resulted in low nitrogen removal rates and often in increased nitrogen concentrations in the effluent [12], mainly in the form of nitrate.…”

Section: Temperaturementioning

confidence: 99%

See 1 more Smart Citation

Performance of Anammox Processes for Wastewater Treatment: A Critical Review on Effects of Operational Conditions and Environmental Stresses

Cho

Kambey

Nguyễn

2019

Water

103

View full text Add to dashboard Cite

The anaerobic ammonium oxidation (anammox) process is well-known as a low-energy consuming and eco-friendly technology for treating nitrogen-rich wastewater. Although the anammox reaction was widely investigated in terms of its application in many wastewater treatment processes, practical anammox application at the pilot and industrial scales is limited because nitrogen removal efficiency and anammox activity are dependent on many operational factors such as temperature, pH, dissolved oxygen concentration, nitrogen loading, and organic matter content. In practical application, anammox bacteria are possibly vulnerable to non-essential compounds such as sulfides, toxic metal elements, alcohols, phenols, and antibiotics that are potential inhibitors owing to the complexity of the wastewater stream. This review systematically summarizes up-to-date studies on the effect of various operational factors on nitrogen removal performance along with reactor type, mode of operation (batch or continuous), and cultured anammox bacterial species. The effect of potential anammox inhibition factors such as high nitrite concentration, high salinity, sulfides, toxic metal elements, and toxic organic compounds is listed with a thorough interpretation of the synergistic and antagonistic toxicity of these inhibitors. Finally, the strategy for optimization of anammox processes for wastewater treatment is suggested, and the importance of future studies on anammox applications is indicated.

show abstract

Section: Nitrogen Loadingmentioning

confidence: 94%

Section: Temperaturementioning

confidence: 99%

Performance of Anammox Processes for Wastewater Treatment: A Critical Review on Effects of Operational Conditions and Environmental Stresses

Cho

Kambey

Nguyễn

2019

Water

103

View full text Add to dashboard Cite

show abstract

“…For example, nitrite can be obtained through partial DNRA and then the produced nitrite, together with the available ammonium, react via the typical anammox pathway to gain energy for growth. Part of the intermediate nitrite could be further reduced to ammonium through full DNRA that reacts with the remaining nitrite via a typical anammox pathway (Castro-Barros et al, 2017). However, heterotrophic denitrifiers are likely to outcompete anammox bacteria for nitrate and VFA because of their faster growth rate, and therefore DNRA by anammox bacteria could be very limited in most cases.…”

Section: Principles Of Nitritation-anammox Processmentioning

confidence: 99%

Status, Challenges, and Perspectives of Mainstream Nitritation–Anammox for Wastewater Treatment

Klaus

Bott

et al. 2018

Water Environment Research

View full text Add to dashboard Cite

The nitritation-anammox process is an efficient and cost-effective approach for biological nitrogen removal, but its application in treating mainstream wastewater remains a great challenge. Mainstream nitritation-anammox processes could create opportunities for achieving energy self-sufficient, or energy-generating water resource recovery facilities. Significant advancements have been achieved via pilot- and full-scale trials to overcome the major obstacles under mainstream conditions, such as repression of nitrite-oxidizing bacteria, limiting the overgrowth of denitrifiers, and effective selection and retention of ammonia-oxidizing bacteria and anammox bacteria. This review paper intends to provide a detailed update of research progress on mainstream nitritation-anammox processes, discuss metabolic interactions, and examine major challenges and possible solutions towards the future development.

show abstract

“…Either it is assimilated by plants and microbes (under aerobic condition) (Rubio-Asensio et al, 2014) or it is denitrified when anoxic conditions prevail. Nitrate reduction or denitrification is carried out by dissimilatory nitrate reducing bacteria (Castro-Barros et al, 2017). However, due to its complexation with SMPs, the availability and fate of biogenic nitrate can be different from inorganic fertilizer nitrate (KNO 3 ).…”

Section: Introductionmentioning

confidence: 99%

Nitrification Rates Are Affected by Biogenic Nitrate and Volatile Organic Compounds in Agricultural Soils

et al. 2019

View full text Add to dashboard Cite

The processes regulating nitrification in soils are not entirely understood. Here we provide evidence that nitrification rates in soil may be affected by complexed nitrate molecules and microbial volatile organic compounds (mVOCs) produced during nitrification. Experiments were carried out to elucidate the overall nature of mVOCs and biogenic nitrates produced by nitrifiers, and their effects on nitrification and redox metabolism. Soils were incubated at three levels of biogenic nitrate. Soils containing biogenic nitrate were compared with soils containing inorganic fertilizer nitrate (KNO 3 ) in terms of redox metabolism potential. Repeated NH 4 –N addition increased nitrification rates (mM NO 3 1- produced g -1 soil d -1 ) from 0.49 to 0.65. Soils with higher nitrification rates stimulated ( p < 0.01) abundances of 16S rRNA genes by about eight times, amoA genes of nitrifying bacteria by about 25 times, and amoA genes of nitrifying archaea by about 15 times. Soils with biogenic nitrate and KNO 3 were incubated under anoxic conditions to undergo anaerobic respiration. The maximum rates of different redox metabolisms (mM electron acceptors reduced g -1 soil d -1 ) in soil containing biogenic nitrate followed as: NO 3 1- reduction 4.01 ± 0.22, Fe 3+ reduction 5.37 ± 0.12, SO 4 2- reduction 9.56 ± 0.16, and CH 4 production (μg g -1 soil) 0.46 ± 0.05. Biogenic nitrate inhibited denitrificaton 1.4 times more strongly compared to mineral KNO 3 . Raman spectra indicated that aliphatic hydrocarbons increased in soil during nitrification, and these compounds probably bind to NO 3 to form biogenic nitrate. The mVOCs produced by nitrifiers enhanced ( p < 0.05) nitrification rates and abundances of nitrifying bacteria. Experiments suggest that biogenic nitrate and mVOCs affect nitrification and redox metabolism in soil.

show abstract

Evaluating the potential for dissimilatory nitrate reduction by anammox bacteria for municipal wastewater treatment

Cited by 117 publications

References 32 publications

Performance of Anammox Processes for Wastewater Treatment: A Critical Review on Effects of Operational Conditions and Environmental Stresses

Performance of Anammox Processes for Wastewater Treatment: A Critical Review on Effects of Operational Conditions and Environmental Stresses

Status, Challenges, and Perspectives of Mainstream Nitritation–Anammox for Wastewater Treatment

Nitrification Rates Are Affected by Biogenic Nitrate and Volatile Organic Compounds in Agricultural Soils

Contact Info

Product

Resources

About