Relationship between functional bacteria in a denitrification desulfurization system under autotrophic, heterotrophic, and mixotrophic conditions
文献类型：期刊论文
| 作者 | Huang, Cong; Liu, Qian; Li, Zhi-Ling; Ma, Xiao-dan; Hou, Ya-Nan; Ren, Nan-Qi; Wang, Ai-Jie |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2021 |
| 卷号 | 188页码:- |
| 关键词 | Correlation network Denitrification desulfurization system Functional gene Isolation of functional bacteria Microbial community structure |
| ISSN号 | 0043-1354 |
| 英文摘要 | The denitrification desulfurization system can be used to remediate wastewater containing carbon, nitrogen, and sulfur. However, the relationship between autotrophic and heterotrophic bacteria remains poorly understood. To better understand the roles and relations of core bacteria, an expanded granular sludge bed (EGSB) reactor was continuously operated under autotrophic (stage I), heterotrophic (stage II) and mixotrophic (stages III-VII) conditions with a 490-day period. Stage IV represented the excellent S-0 recovery rate (69.5%). The different trophic conditions caused the obvious succession of dominant bacterial genera. Autotrophic environment (stage I) enriched mostly Thiobacillus, and heterotrophic environment (stage II) was dominated with Azoarcus and Pseudomonas. Thauera, Arcobacter and Azoarcus became the predominant genera under mixotrophic conditions (stage III-VII). Strains belonged to these core genera were further isolated, and all seven isolates were confirmed with denitrifying sulfur oxidation capacity. Heterotrophic strain HDD1 (genus of Thauera) possessed both the highest sulfide degradation and S-0 recovery rates. Expression levels of cbbM and gltA genes were positively related with the autotrophic and heterotrophic conditions, respectively. NirK gene was highly expressed between log 3.7-log 4.3 during the entire run. Expression of both sqr and soxB genes were closely related with sulfur conversion. More than 57.5% of S-0 recovery rate could be obtained as sqr gene expression was greater than log 3.2, and while, sulfate was the primary form as soxB gene expression higher than log 3.9. The correlation between core microbial genera was very low from network, indicating a complex and non-specific mutualistic network between bacterial functional groups under each nutrient condition, and a stable coexistence state was possibly formed through utilizing each the secondary or waste metabolites in the mixotrophic conditions. This relationship was beneficial to the stability of the microbial community structure in the denitrification desulfurization system. (C) 2020 Published by Elsevier Ltd. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46146]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Tianjin Insitute Ind Biotechnol, Tianjin 300308, Peoples R China 2.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China 4.Dongguan Univ Technol, Res Ctr Ecoenvironm Engn, Dongguan 523808, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Cong,Liu, Qian,Li, Zhi-Ling,et al. Relationship between functional bacteria in a denitrification desulfurization system under autotrophic, heterotrophic, and mixotrophic conditions[J]. WATER RESEARCH,2021,188:-. |
| APA | Huang, Cong.,Liu, Qian.,Li, Zhi-Ling.,Ma, Xiao-dan.,Hou, Ya-Nan.,...&Wang, Ai-Jie.(2021).Relationship between functional bacteria in a denitrification desulfurization system under autotrophic, heterotrophic, and mixotrophic conditions.WATER RESEARCH,188,-. |
| MLA | Huang, Cong,et al."Relationship between functional bacteria in a denitrification desulfurization system under autotrophic, heterotrophic, and mixotrophic conditions".WATER RESEARCH 188(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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