Back to Search
Start Over
Evaluating performance of nitrogen and organic carbon removal in a single reactor by using A. faecalis strain NR aerobically
- Source :
- Bioresource technology. 308
- Publication Year :
- 2020
-
Abstract
- The performance of nitrogen and organic carbon removal in a single reactor (R1) operating with A. faecalis strain NR aerobically was assessed. Under 150 mg/L influent NH4+-N, 91.3%, 71.4% and 90.9% of NH4+-N, TN and TOC were removed, presenting much higher efficiency than a control bioreactor inoculating activated sludge (R0). The amoA gene expression from strain NR in R1 was 7.8 times higher than that from activated sludge in R0, demonstrating the role of strain NR in removing NH4+. The analysis of microbial community composition revealed that strain NR was the dominant species and outcompeted ammonium oxidizing bacterium (AOB) under high organic carbon as well as ammonium. Simultaneous ammonium and organic carbon removal still maintained for a long-term operation with NH4+-N loadings of 300 and 450 mg/L in R1. Nitrogen balance showed that stripped NH3 only occupied a few percentages and aerobic denitrification played a significant role in nitrogen removal.
- Subjects :
- inorganic chemicals
0106 biological sciences
Nitrogen balance
Environmental Engineering
Nitrogen
chemistry.chemical_element
Bioengineering
010501 environmental sciences
Wastewater
01 natural sciences
chemistry.chemical_compound
Bioreactors
010608 biotechnology
Aerobic denitrification
Bioreactor
Ammonium
Waste Management and Disposal
0105 earth and related environmental sciences
Total organic carbon
Strain (chemistry)
Sewage
Renewable Energy, Sustainability and the Environment
Chemistry
General Medicine
Carbon
Activated sludge
Denitrification
Nuclear chemistry
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 308
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....11c3cd860d973a9d89eb95c97bbf851f