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:Potato-chip industry wastewater
FNT system:Co-denitrification and denitrification
Reactor:Sequencing batch reactor
Medium:Suspension
Culture taken from:Surface-sterilized rice plants
Fungal species:Rhizopus arrhizus
Microorganism cultured:
Respiration:Aerobic
Electron donor:Potassium nitrate
Electron acceptor:Citrate
PH:nan
HRT:nan
Initial inoculum:5% v/v
Aeration rate:nan
Incubation time:4 days
Change in biomass yield:nan
Ammonia removal rate:nan
Nitrate removal rate:7-11 mg/L/hr
Nitrate removal efficiencies (%):97-100
Ammonia removal efficiency (%):nan
Chemical Oxygen Demand (COD):nan
Change in COD reduction (%):nan
Authors:Wang et al., 2016
Title:Nitrogen removal from synthetic wastewater using single and mixed culture systems of denitrifying fungi, bacteria, and actinobacteria
Pubmed link:None
Full research link:Link
Abstract:The aim of this study was to investigate the effects of single and mixed culture of denitrifying fungi, bacteria, and actinobacteria on nitrogen removal and N2O emission in treatment of wastewater. Denitrifying endophytes of Pseudomonas sp. B2, Streptomyces sp. A9, and Fusarium sp. F3 isolated from rice plants were utilized for treatment of synthetic wastewater containing nitrate and nitrite. Experiments were conducted under shaking and static conditions. Results showed that under the static condition, more than 97 % of nitrate removal efficiencies were reached in all the treatments containing B2. The nitrate removal rates within the first 12 h in the treatments of B2, B2+A9, B2+F3, and B2+A9+F3 were 7.3, 9.8, 11, and 11 mg L-1 h-1, respectively. Under the shaking condition, 100 % of nitrite was removed in all the treatments containing B2. The presence of A9 and F3 with B2 increased the nitrite removal rates under both the shaking and static conditions. Compared to the B2 system, the mixed systems of B2+A9, B2+F3, and B2+A9+F3 reduced N2O emission (78.4 vs. 19.4, 1.80, and 0.03 ?M in 4 weeks, respectively). Our results suggested that B2 is an important strain that enhances nitrogen removal from wastewater. Mixed cultures of B2 with A9 and F3 can remove more nitrate and nitrite from wastewater and reduce nitrite accumulation and N2O emission in the denitrification process.