Microbial community functional structure in response to micro-aerobic conditions in sulfate-reducing sulfur-producing bioreactor

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Microbial community functional structure in response to micro-aerobic conditions in sulfate-reducing sulfur-producing bioreactor
	Yu, Hao ; Chen, Chuan ; Ma, Jincai ; Xu, Xijun ; Fan, Ronggui ; Wang, Aijie
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2014
卷号	26 期号:5 页码:1099-1107
关键词	micro-aerobic condition elemental sulfur recovery microbial community functional gene array
ISSN号	1001-0742
中文摘要	Limited oxygen supply to anaerobic wastewater treatment systems had been demonstrated as an effective strategy to improve elemental sulfur (S-0) recovery, coupling sulfate reduction and sulfide oxidation. However, little is known about the impact of dissolved oxygen (DO) on the microbial functional structures in these systems. We used a high throughput tool (GeoChip) to evaluate the microbial community structures in a biological desulfurization reactor under micro-aerobic conditions (DO: 0.02-0.33 mg/L). The results indicated that the microbial community functional compositions and structures were dramatically altered with elevated DO levels. The abundances of dsrA/B genes involved in sulfate reduction processes significantly decreased (p < 0.05, LSD test) at relatively high DO concentration (DO: 0.33 mg/L). The abundances of sox and fccA/B genes involved in sulfur/sulfide oxidation processes significantly increased (p < 0.05, LSD test) in low DO concentration conditions (DO: 0.09 mg/L) and then gradually decreased with continuously elevated DO levels. Their abundances coincided with the change of sulfate removal efficiencies and elemental sulfur (S-0) conversion efficiencies in the bioreactor. In addition, the abundance of carbon degradation genes increased with the raising of DO levels, showing that the heterotrophic microorganisms (e.g., fermentative microorganisms) were thriving under micro-aerobic condition. This study provides new insights into the impacts of micro-aerobic conditions on the microbial functional structure of sulfate-reducing sulfur-producing bioreactors, and revealed the potential linkage between functional microbial communities and reactor performance.
WOS记录号	WOS:000335489400017
公开日期	2015-03-26
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/9667]
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
推荐引用方式 GB/T 7714	Yu, Hao,Chen, Chuan,Ma, Jincai,et al. Microbial community functional structure in response to micro-aerobic conditions in sulfate-reducing sulfur-producing bioreactor[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,26(5):1099-1107.
APA	Yu, Hao,Chen, Chuan,Ma, Jincai,Xu, Xijun,Fan, Ronggui,&Wang, Aijie.(2014).Microbial community functional structure in response to micro-aerobic conditions in sulfate-reducing sulfur-producing bioreactor.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,26(5),1099-1107.
MLA	Yu, Hao,et al."Microbial community functional structure in response to micro-aerobic conditions in sulfate-reducing sulfur-producing bioreactor".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 26.5(2014):1099-1107.