RCEES OpenIR  > 中国科学院环境生物技术重点实验室
Relationship between functional bacteria in a denitrification desulfurization system under autotrophic, heterotrophic, and mixotrophic conditions
Huang, Cong; Liu, Qian; Li, Zhi-Ling; Ma, Xiao-dan; Hou, Ya-Nan; Ren, Nan-Qi; Wang, Ai-Jie
2021
Source PublicationWATER RESEARCH
ISSN0043-1354
Volume188Pages:-
AbstractThe 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.
Department中国科学院环境生物技术重点实验室
KeywordCorrelation network Denitrification desulfurization system Functional gene Isolation of functional bacteria Microbial community structure
WOS Research AreaEngineering, Environmental ; Environmental Sciences ; Water Resources
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46146
Collection中国科学院环境生物技术重点实验室
Affiliation1.Chinese Acad Sci, Tianjin Insitute Ind Biotechnol, Tianjin 300308, Peoples R China
2.Dongguan Univ Technol, Res Ctr Ecoenvironm Engn, Dongguan 523808, Peoples R China
3.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China
4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
Recommended Citation
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):-.
Files in This Item: Download All
File Name/Size DocType Version Access License
Relationship between(8069KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Huang, Cong]'s Articles
[Liu, Qian]'s Articles
[Li, Zhi-Ling]'s Articles
Baidu academic
Similar articles in Baidu academic
[Huang, Cong]'s Articles
[Liu, Qian]'s Articles
[Li, Zhi-Ling]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Huang, Cong]'s Articles
[Liu, Qian]'s Articles
[Li, Zhi-Ling]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Relationship between functional bacteria in a denitrification desulfurization system under autotrophic, heterotrophic, and mixotrophic conditions.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.