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Hypothermia Pseudomonas taiwanensis J488 exhibited strong tolerance capacity to high dosages of divalent metal ions during nitrogen removal process
- Source :
- Bioresource technology. 341
- Publication Year :
- 2021
-
Abstract
- The nitrogen metabolic pathways of Pseudomonas taiwanensis J488 have not been confirmed from genomic function analysis and its divalent metal ion resistance remains poorly understood. In this study, the key denitrifying gene of Pseudomonas taiwanensis J488, nirB, was determined by draft genome sequencing. The nitrification of ammonium was insensitive to high concentrations of Ca(II), Mn(II), Zn(II), and Cd(II). Similarly, complete nitrite removal was achieved despite Mn(II) and Zn(II) reaching concentrations up to 30 mg/L. Furthermore, the efficiency of nitrate removal was significantly enhanced by 1.33%, 3.33%, 5.99%, and 1.53% with the addition of 0.5 mg/L Ca(II), 20 mg/L Mn(II), 5 mg/L Zn(II), and 2 mg/L Cd(II), respectively, comparison with the control. The bacterial growth in both nitrifying and denitrifying processes was substantially promoted by various dosages of divalent metal ions. These results indicate that divalent metal ions would not severely limit the capacity of strain J488 to purify nitrogen-polluted wastewater.
- Subjects :
- Environmental Engineering
Nitrogen
chemistry.chemical_element
Bioengineering
Hypothermia
Bacterial growth
Wastewater
chemistry.chemical_compound
Denitrifying bacteria
Nitrate
Aerobic denitrification
Pseudomonas
Ammonium Compounds
Humans
Ammonium
Nitrite
Waste Management and Disposal
Nitrites
Renewable Energy, Sustainability and the Environment
Heterotrophic Processes
General Medicine
Nitrification
Aerobiosis
chemistry
Denitrification
Nuclear chemistry
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 341
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....6b82dd188473f622ac26bb228abd4aa0