Biological Nitrogen Removal Database
A manually curated data resource for microbial nitrogen removal
Biological Nitrogen Removal Database
A manually curated data resource for microbial nitrogen removal
Influent:Synthetic wastewater
Anammox system:Sulfate-dependent anaerobic ammonium oxidation
Anammox reactor:Expanded bed reactor
Medium:nan
Culture taken from:Anaerobic digester in a municipal wastewater treatment plant
Microorganism cultured:nan
Respiration:Anaerobic
Electron donor:Ammonium sulfate ((NH4)2SO4)
Electron acceptor:Sodium Nitrite (NaNO2)
PH:7.5
Maximum sludge concentration:14.9
HRT:1 d
NH4–N Influent conc(mg/L):843
NO2–N Influent conc(mg/L):nan
SO4–S Influent conc(mg/L):130
NH4–N Removal efficiency (%):56.82^
NO2–N Removal efficiency (%):nan
SO4-S Removal efficiency (%):71.67^
NLR kg-N/m3/d:nan
NRR kg-N/m3/d:nan
Major findings:Simultaneous removal of ammonium and sulfate (SRAS) process helps to improve the application of wastewater treatment, and also might widen the cycle approach between elemental nitrogen and sulfur.
Authors:Zhang et al., 2009
Title:Performance of sulfate-dependent anaerobic ammonium oxidation
Pubmed link:None
Full research link:Link
Abstract:The performance of sulfate-dependent anaerobic ammonium oxidation was studied. The results showed that both SO4 2? and NH4 + were chemically stable under anaerobic conditions. They did not react with each other in the absence of biological catalyst (sludge). The anaerobic digested sludge cultivated in an anaerobic reactor for three years took on the ability of oxidizing ammonium with sulfate anaerobically. The average reduction of sulfate and ammonium was 71.67 mg·L?1 and 56.82 mg·L?1 at high concentrations. The reaction between SO4 2? and NH4 + was difficult, though feasible, due to its low standard Gibbs free energy change. The experiment demonstrated that high substrate concentrations and low oxidation-reduction potential (ORP) may be favourable for the biological reaction.