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Improvement of Black-Odor Water by Pichia Strain GW1 under Optimized NH3-N Degradation Conditions

文献类型: 外文期刊

作者: Xie, Haiwei 1 ; Wang, Mingyang 2 ; Zeng, Huayang 1 ; Yu, Mingrong 1 ; Wu, Zijian 1 ; Chen, Shuhong 1 ; Zhao, Shaotian; 1 ;

作者机构: 1.Huizhou Univ, Sch Life Sci, Huizhou 516007, Peoples R China

2.Shenyang Agr Univ, Coll Anim Sci & Vet Med, Key Lab Zoonosis Liaoning Prov, Shenyang 110866, Peoples R China

3.Ruijie Environm Protect Engn Co Ltd, Huizhou 516007, Peoples R China

4.Guangdong Acad Agr Sci, Inst Anim Sci, State Key Lab Livestock & Poultry Breeding, Guangzhou 510640, Peoples R China

期刊名称:BIOMED RESEARCH INTERNATIONAL ( 影响因子:3.411; 五年影响因子:3.62 )

ISSN: 2314-6133

年卷期: 2020 年 2020 卷

页码:

收录情况: SCI

摘要: In this study, a yeast strain with an outstanding NH3-N degradation ability was isolated from the sediment of a black-odor water channel in Guangdong Province, China. Based on phenotypic and phylogenetic analysis, this strain was identified as Pichia kudriavzevii GW1. The optimum conditions for NH3-N degradation by the GW1 strain were as follows: 0.3% inoculum concentration, 1.5 L/min aeration, pH 7, and a temperature of 35 degrees C. Under optimized conditions, the GW1 strain degraded 95.5% of the NH3-N. The strain was then added to simulated black-odor water under optimal degradation conditions to investigate changes to the bacterial community over time. 16S rRNA sequencing of samples collected on days 0, 7, 14, and 21 showed that, in the presence of the GW1 strain, the relative abundances of the phyla Proteobacteria, Bacteroidetes, Chloroflexi, and Firmicutes increased in the black-odor water. In addition, the relative abundance of Propionivibrio, a known NH3-N degrading genus, increased. This study will facilitate the use of microbiological methods to repair black-odor water.

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