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题名: Temporal variation of microbial population in a thermophilic biofilter for SO2 removal
作者: Zhang, Jingying; Li, Lin; Liu, Junxin
刊名: JOURNAL OF ENVIRONMENTAL SCIENCES
出版日期: 2016-01
卷号: 39, 页码:4-12
关键词: Thermophilic biofilter ; Sulfur dioxide ; Microbial population ; DGGE analysis ; O-2 distribution
DOI: 10.1016/j.jes.2015.11.005
部门归属: 水污染控制实验室
英文摘要: The performance of a biofilter relies on the activity of microorganisms during the gas contaminant treatment process. In this study, SO2 was treated using a laboratory-scale biofilter packed with polyurethane foam cubes (PUFC), on which thermophilic desulfurization bacteria were attached. The thermophilic biofilter effectively reduced SO2 within 10 months of operation time, with a maximum elimination capacity of 48.29 g/m(3)/hr. Temporal shifts in the microbial population in the thermophilic biofilter were determined through polymerase chain reaction-denaturing gradient gel electrophoresis and deoxyribonucleic acid (DNA) sequence analysis. The substrate species and environmental conditions in the biofilter influenced the microbial population. Oxygen distribution in the PUFC was analyzed using a microelectrode. When the water-containing rate in PUFC was over 98%, the oxygen distribution presented aerobic-anoxic-aerobic states along the test route on the PUFC. The appearance of sulfate-reducing bacteria was caused by the anaerobic conditions and sulfate formation after 4 months of operation. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36239
Appears in Collections:水污染控制实验室_期刊论文

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