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Characterization of Acinetobacter indicus ZJB20129 for heterotrophic nitrification and aerobic denitrification isolated from an urban sewage treatment plant
- Source :
- Bioresource technology. 347
- Publication Year :
- 2021
-
Abstract
- The Acinetobacter indicus strain ZJB20129 isolated from an urban sewage treatment plant demonstrated the heterotrophic nitrification-aerobic denitrification (HN-AD) ability. Stain ZJB20129 could remove 98.73% of ammonium-N, 97.26% of nitrite-N and 96.55% of nitrate-N, and the maximum removal rate was 3.66, 4.62 and 5.21 mg/L/h, respectively. Ammonium was preferentially used during simultaneous nitrification and denitrification. Strain ZJB20129 exhibited highest ammonium removal capability when carbon source was sodium succinate, C/N ratio was 15, pH was 8.0, and temperature was 35 ℃. Key enzymes involved in HN-AD including hydroxylamine oxidase, periplasmic nitrate reductase and nitrite reductase as well as their encoding genes were detected, and the metabolic pathway of HN-AD was subsequently predicted. Our results suggested that Acinetobacter indicus ZJB20129 displayed superior nitrogen removal performance on actual wastewater and thus made it have a good application prospect in wastewater biological treatment.
- Subjects :
- Environmental Engineering
Denitrification
Acinetobacter
Sewage
Renewable Energy, Sustainability and the Environment
Chemistry
Nitrogen
Bioengineering
Heterotrophic Processes
General Medicine
Nitrite reductase
Nitrate reductase
Nitrification
Aerobiosis
chemistry.chemical_compound
Wastewater
Aerobic denitrification
Ammonium Compounds
Sewage treatment
Ammonium
Food science
Waste Management and Disposal
Nitrites
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 347
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....d5df021f1d2a22832375098eddbb13fd