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Efficient ammonium removal through heterotrophic nitrification-aerobic denitrification by Acinetobacter baumannii strain AL-6 in the presence of Cr(VI).
- Source :
-
Journal of Bioscience & Bioengineering . Dec2020, Vol. 130 Issue 6, p622-629. 8p. - Publication Year :
- 2020
-
Abstract
- A novel strain AL-6, which was identified as Acinetobacter baumannii , presented an efficient ability to remove ammonium. Nitrogen balance indicates that 55.8% of the initial NH 4 +āN was ultimately converted to N 2 through heterotrophic nitrification and aerobic denitrification, while 30.6% was contributed to assimilation. More interestingly, efficient ammonium removal could be achieved in the presence of Cr(VI) of 0ā10 mg Lā1 by strain AL-6. Meanwhile, Cr(VI) reduction was observed. The Cr(VI) was mainly reduced to less toxic Cr(III) by strain AL-6 in the culture, while a small part of Cr(VI) might be accumulated in bacterial cells in the formation of Cr(III). The optimal conditions for ammonium removal as well as Cr(VI) reduction was pH of 7 and C/N ratio of 10ā15. This study provided a potential prospect for the treatment of Cr(VI)-containing ammonium wastewater. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DENITRIFICATION
*ACINETOBACTER baumannii
*BACTERIAL cells
*AMMONIUM
*NITRIFICATION
Subjects
Details
- Language :
- English
- ISSN :
- 13891723
- Volume :
- 130
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Bioscience & Bioengineering
- Publication Type :
- Academic Journal
- Accession number :
- 147071546
- Full Text :
- https://doi.org/10.1016/j.jbiosc.2020.07.010