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:Biomass from a wastewater treament plant
Denitrification system:Heterotrophic denitrification
Denitrifying reactor:Fed-batch reactor
Medium:Suspended culture
Culture taken from:Sludge
Organism (s) cultured:nan
Respiration:Anaerobic
Electron donor:Sodium acetate
Electron acceptor:Nitrate
Input NO3-N (mg/l):nan
Nitrate removal rate (mg NO3-N/l/h):nan
Denitrification rate (gNO3-N removed/m3/day):19.79
Microorganisms identified:nan
Molecular tools:nan
Major findings:Fed-batch mode was implemented to perform denitrification studies to compare the efficiencies different carbon sources for nitrate removal.
Authors:Bilanovic et al., 1999
Title:Denitrification under high nitrate concentration and alternating anoxic conditions
Pubmed link:None
Full research link:Link
Abstract:Denitrification under high nitrate concentration was studied in a fed-batch mode. Methanol, sodium acetate and effluent from anaerobic digesters (AD) were compared as the carbon sources. An alternating oxy–anoxy regime (10 min aeration over a period of 110 min) seems to promote the establishment of denitrifying bio-flocks of good settling characteristics. The bio-flocks produced in an anoxic reactor were of inferior settling characteristics. Bio-flocks at concentrations of 4 to 5 g VSS/l denitrify efficiently on all three carbon sources tested. A maximum nitrate removal rate was found to be 0.486 g NO3?-N/(g VSS day). Nitrite accumulated initially but its concentration decreased with time and eventually reached zero when acetate or AD effluent were used as the carbon source.