Continuous desulfurization and bacterial community structure of an integrated bioreactor developed to treat SO2 from a gas stream

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	Continuous desulfurization and bacterial community structure of an integrated bioreactor developed to treat SO2 from a gas stream
	Liu, Junxin; Lin, Jian; Li, Lin; Ding, Wenjie; Zhang, Jingying
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2015-11-01
卷号	37 页码:130-138
关键词	Biological Deodorization Integrated Bioreactor Sulfur Dioxide Sulfur Bacteria Dna Sequence Analysis Clone Library
英文摘要	Sulfide dioxide (SO2) is often released during the combustion processes of fossil fuels. An integrated bioreactor with two sections, namely, a suspended zone (SZ) and immobilized zone (IZ), was applied to treat SO2 for 6 months. Sampling ports were set in both sections to investigate the performance and microbial characteristics of the integrated bioreactor. SO2 was effectively removed by the synergistic effect of the SZ and IZ, and more than 85% removal efficiency was achieved at steady state. The average elimination capacity of SO2 in the bioreactor was 2.80 g/(m(3)-hr) for the SZ and 1.50 g/(m(3).hr) for the IZ. Most SO2 was eliminated in the SZ. The liquid level of the SZ and the water content ratio of the packing material in the IZ affected SO2 removal efficiency. The SZ served a key function not only in SO2 elimination, but also in moisture maintenance for the IZ. The desired water content in IZ could be feasibly maintained without any additional pre-humidification facilities. Clone libraries of 16S rDNA directly amplified from the DNA of each sample were constructed and sequenced to analyze the community composition and diversity in the individual zones. The desulfurization bacteria dominated both zones. Paenibacillus sp. was present in both zones, whereas Ralstonia sp. existed only in the SZ. The transfer of SO2 to the SZ involved dissolution in the nutrient solution and biodegradation by the sulfur-oxidizing bacteria. This work presents a potential biological treatment method for waste gases containing hydrophilic compounds. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
WOS研究方向	Environmental Sciences
WOS记录号	WOS:000365931900015
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32875]
专题	生态环境研究中心_水污染控制实验室
推荐引用方式 GB/T 7714	Liu, Junxin,Lin, Jian,Li, Lin,et al. Continuous desulfurization and bacterial community structure of an integrated bioreactor developed to treat SO2 from a gas stream[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2015,37:130-138.
APA	Liu, Junxin,Lin, Jian,Li, Lin,Ding, Wenjie,&Zhang, Jingying.(2015).Continuous desulfurization and bacterial community structure of an integrated bioreactor developed to treat SO2 from a gas stream.JOURNAL OF ENVIRONMENTAL SCIENCES,37,130-138.
MLA	Liu, Junxin,et al."Continuous desulfurization and bacterial community structure of an integrated bioreactor developed to treat SO2 from a gas stream".JOURNAL OF ENVIRONMENTAL SCIENCES 37(2015):130-138.