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The nitrogen removal characterization of a cold-adapted bacterium: Bacillus simplex H-b
- Source :
- Bioresource technology. 323
- Publication Year :
- 2020
-
Abstract
- The removal efficacy of biological nitrogen removal process is inhibited by low temperatures. Herein, a psychrotrophic bacterium strain, Bacillus simplex H-b, was isolated and identified with the potential to conduct heterotrophic nitrification and aerobic denitrification in the temperature range from 5 to 37 °C. At 10 °C, the removal efficiencies of initial nitrate–N (63 mg/L), nitrite–N (10 mg/L) and ammonium–N (60 mg/L) were 67.29%, 78.69% and 82.16%, with the maximum removal rate of 0.56, 0.18 and 0.74 mg/L/h, respectively. Additionally, both the accumulation level of ATP (adenosine triphosphate) and the formation of extracellular polymeric substances was found to increase with the decrease of temperature from 37 °C to 10 °C, indicating strain H-b might resist low temperature stress through its cellular extreme environment resistant mechanism and further suggesting the newly isolated strain could serve as a promising candidate for nitrogen contaminated wastewater treatment, especially under low-temperature condition.
- Subjects :
- 0106 biological sciences
Environmental Engineering
Nitrogen
chemistry.chemical_element
Bioengineering
Bacillus
010501 environmental sciences
01 natural sciences
chemistry.chemical_compound
Extracellular polymeric substance
010608 biotechnology
Aerobic denitrification
Ammonium Compounds
Extreme environment
Ammonium
Waste Management and Disposal
Nitrites
0105 earth and related environmental sciences
Nitrates
biology
Strain (chemistry)
Renewable Energy, Sustainability and the Environment
Heterotrophic Processes
General Medicine
biology.organism_classification
Nitrification
Aerobiosis
chemistry
Denitrification
Bacteria
Nuclear chemistry
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 323
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....e331bd5979b48f3edbe205fc290ae08a