Elemental sulfur recovery and spatial distribution of functional bacteria and expressed genes under different carbon/nitrate/sulfide loadings in up-flow anaerobic sludge blanket reactors

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

	Elemental sulfur recovery and spatial distribution of functional bacteria and expressed genes under different carbon/nitrate/sulfide loadings in up-flow anaerobic sludge blanket reactors
	Huang, Cong; Liu, Qian; Chen, Chuan; Zhao, You-Kang; Chen, Fan; Wang, Ai-Jie; Li, Zhi-Ling; Zhou, Ji-Zhong; Liu, Wen-Zong; Gao, Ling-Fang
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2017-02-15
卷号	324 期号:0 页码:48-53
关键词	Elemental Sulfur Recovery Influent Loading Denitrifying Sulfide Removal (Dsr) Process Up-flow Anaerobic Sludge Blanket (Uasb) Reactor Bacterial Structure
英文摘要	To characterize the impact of influent loading on elemental sulfur (S) recovery during the denitrifying and sulfide oxidation process, three identical, lab-scale UASB reactors (30 cm in length) were established in parallel under different influent acetate/nitrate/sulfide loadings, and the reactor performance and functional community structure were investigated. The highest S recovery was achieved at 77.9% when the acetate/nitrate/sulfide loading was set to 1.9/1.6/0.7 kg d(-1) m(-3). Under this condition, the genera Thauera, Sulfurimonas, and Azoarcus were predominant at 0-30, 0-10 and 20-30 cm, respectively; meanwhile, the sqr gene was highly expressed at 0-30 cm. However, as the influent loading was halved and doubled, S recovery was decreased to 27.9% and 45.1%, respectively. As the loading was halved, the bacterial distribution became heterogeneous, and certain autotrophic sulfide oxidation genera, such as Thiobacillus, dominated, especially at 20-30 cm. As the loading doubled, the bacterial distribution was relatively homogeneous with Thauera and Azoarcus being predominant, and the nirK and sox genes were highly expressed. The study verified the importance of influent loading to regulate S recovery, which could be achieved as Thauera and Sulfurimonas dominated. An influent loading that was too low or too high gave rise to insufficient oxidation or over-oxidation of the sulfide and low S-0 recovery performance. (C) 2016 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39626]
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	Huang, Cong,Liu, Qian,Chen, Chuan,et al. Elemental sulfur recovery and spatial distribution of functional bacteria and expressed genes under different carbon/nitrate/sulfide loadings in up-flow anaerobic sludge blanket reactors[J]. JOURNAL OF HAZARDOUS MATERIALS,2017,324(0):48-53.
APA	Huang, Cong.,Liu, Qian.,Chen, Chuan.,Zhao, You-Kang.,Chen, Fan.,...&Gao, Ling-Fang.(2017).Elemental sulfur recovery and spatial distribution of functional bacteria and expressed genes under different carbon/nitrate/sulfide loadings in up-flow anaerobic sludge blanket reactors.JOURNAL OF HAZARDOUS MATERIALS,324(0),48-53.
MLA	Huang, Cong,et al."Elemental sulfur recovery and spatial distribution of functional bacteria and expressed genes under different carbon/nitrate/sulfide loadings in up-flow anaerobic sludge blanket reactors".JOURNAL OF HAZARDOUS MATERIALS 324.0(2017):48-53.