| Title |
The impact of DO and salinity on microbial community in poly(butylene succinate) denitrification reactors for recirculating aquaculture system wastewater treatment
|
|---|---|
| Published in |
AMB Express, June 2017
|
| DOI | 10.1186/s13568-017-0412-3 |
| Pubmed ID | |
| Authors |
Ya-Le Deng, Yun-Jie Ruan, Song-Ming Zhu, Xi-Shan Guo, Zhi-Ying Han, Zhang-Ying Ye, Gang Liu, Ming-Ming Shi |
| Abstract |
The interactions between environmental factors and bacterial community shift in solid-phase denitrification are crucial for optimum operation of a reactor and to achieve maximum treatment efficiency. In this study, Illumina high-throughput sequencing was applied to reveal the effects of different operational conditions on bacterial community distribution of three continuous operated poly(butylene succinate) biological denitrification reactors used for recirculating aquaculture system (RAS) wastewater treatment. The results indicated that salinity decreased OTU numbers and diversity while dissolved oxygen (DO) had no obvious influence on OTU numbers. Significant microbial community composition differences were observed among and between three denitrification reactors under varied operation conditions. This result was also demonstrated by cluster analysis (CA) and detrended correspondence analysis (DCA). Hierarchical clustering and redundancy analysis (RDA) was performed to test the relationship between environmental factors and bacterial community compositions and result indicated that salinity, DO and hydraulic retention time (HRT) were the three key factors in microbial community formation. Besides, Simplicispira was detected under all operational conditions, which worth drawing more attention for nitrate removal. Moreover, the abundance of nosZ gene and 16S rRNA were analyzed by real-time PCR, which suggested that salinity decreased the proportion of denitrifiers among whole bacterial community while DO had little influence on marine reactors. This study provides an overview of microbial community shift dynamics in solid-phase denitrification reactors when operation parameters changed and proved the feasibility to apply interval aeration for denitrification process based on microbial level, which may shed light on improving the performance of RAS treatment units. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 48 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 48 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 6 | 13% |
| Student > Bachelor | 5 | 10% |
| Student > Master | 5 | 10% |
| Researcher | 5 | 10% |
| Student > Postgraduate | 3 | 6% |
| Other | 4 | 8% |
| Unknown | 20 | 42% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 10 | 21% |
| Environmental Science | 8 | 17% |
| Engineering | 5 | 10% |
| Biochemistry, Genetics and Molecular Biology | 2 | 4% |
| Immunology and Microbiology | 1 | 2% |
| Other | 2 | 4% |
| Unknown | 20 | 42% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 03 June 2017.
All research outputs
#15,462,982
of 22,977,819 outputs
Outputs from AMB Express
#446
of 1,239 outputs
Outputs of similar age
#199,459
of 317,446 outputs
Outputs of similar age from AMB Express
#39
of 72 outputs
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