Wang, X.; Zhu, H.; Shutes, B.; Fu, B.; Yan, B.; Yu, X.; Wen, H.; Chen, X.

Identification and denitrification characteristics of a salt-tolerant denitrifying bacterium Pannonibacter phragmitetus F1

Article

Wang, X., Zhu, H., Shutes, B., Fu, B., Yan, B., Yu, X., Wen, H. and Chen, X. 2019. Identification and denitrification characteristics of a salt-tolerant denitrifying bacterium Pannonibacter phragmitetus F1. AMB Express. 9 (1), pp. 1-11. https://doi.org/10.1186/s13568-019-0918-y

Publication dates
Type	Article
Title	Identification and denitrification characteristics of a salt-tolerant denitrifying bacterium Pannonibacter phragmitetus F1
Authors	Wang, X., Zhu, H., Shutes, B., Fu, B., Yan, B., Yu, X., Wen, H. and Chen, X.
Abstract	A salt-tolerant denitrifying bacterium F1 was isolated in this study, which has high nitrite (NO -N) and nitrate (NO -N) removal abilities. The salt tolerance capacity of strain F1 was further verified and the effects of initial pH, initial NaNO concentration and inoculation size on the denitrification capacity of strain F1 under saline conditions were evaluated. Strain F1 was identified as Pannonibacter phragmitetus and named Pannonibacter phragmitetus F1. This strain can tolerate NaCl concentrations up to 70 g/L, and its most efficient denitrification capacity was observed at NaCl concentrations of 0-10 g/L. Under non-saline condition, the removal percentages of NO -N and NO -N by strain Pannonibacter phragmitetus F1 at pH of 10 and inoculation size of 5% were 100% and 83%, respectively, after cultivation for 5 days. Gas generation was observed during the cultivation, indicating that an efficient denitrification performance was achieved. When pH was 10 and the inoculation size was 5%, both the highest removal percentages of NO -N (99%) and NO -N (95%) by strain Pannonibacter phragmitetus F1 were observed at NaCl concentration of 10 g/L. When the NaCl concentration was 10 g/L, strain Pannonibacter phragmitetus F1 can adapt to a wide range of neutral and alkaline environments (pH of 7-10) and is highly tolerant of NaNO concentration (0.4-1.6 g/L). In conclusion, strain Pannonibacter phragmitetus F1 has a great potential to be applied in the treatment of saline wastewater containing high nitrogen concentrations, e.g. coastal aquaculture wastewater.
Keywords	Denitrification, denitrifying bacteria, pannonibacter phragmitetus, salt tolerance
Publisher	Springer Open
Journal	AMB Express
ISSN	2191-0855
Electronic	2191-0855
Print	01 Dec 2019
Online	03 Dec 2019
Publication process dates
Deposited	18 Dec 2019
Accepted	22 Nov 2019
Output status	Published
Publisher's version	s13568-019-0918-y.pdf License CC BY 4.0
Copyright Statement	© The Author(s) 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Digital Object Identifier (DOI)	https://doi.org/10.1186/s13568-019-0918-y
Language	English

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