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题名: Temporal variation of microbial population in acclimation and start-up period of a thermophilic desulfurization biofilter
作者: Zhang, Jingying; Li, Lin; Liu, Junxin; Han, Yunping
刊名: INTERNATIONAL BIODETERIORATION & BIODEGRADATION
出版日期: 2016-04
卷号: 109, 页码:157-164
关键词: Thermophilic biofilter ; SO2 ; Desulfurization bacteria ; Acclimatization ; Start-up period ; DGGE analysis
DOI: 10.1016/j.ibiod.2016.01.021
部门归属: 水污染控制实验室
英文摘要: Microorganisms in a biofilter play important roles in the gas contaminants treatment process. In this study, thermophilic desulfurization bacteria were inoculated in a thermophilic biofilter for SO2 treatment after acclimation and enrichment. Molecular biology techniques were applied to detect temporal variation of microbial population during acclimation and biofilter start-up period. The acclimation temperatures were 50, 55, and 60 degrees C. Desulfurization bacteria dominated the enrichments. During acclimation, desulfurization bacteria and thermophilic bacteria increased from 36.84% to 78.95%-52.94% and 88.24%, respectively. In addition, the microbial diversity indices of these enrichments decreased with time. Substrate species and acclimation temperature influenced the microbial structure of the enrichments. The thermophilic biofilter inoculated with enrichments could achieve a rapid start-up, and over 80% of removal efficiency could be obtained within two weeks. The maximum elimination capacity was 38.71 g m(-3) h(-1) at 152 mg m(-3) inlet concentration. The total sulfur bacteria proportion increased obviously during the start-up period. Moreover, desulfurization bacteria that originally existed in inocula, e.g., Pseudomonas putida, Bacillus thioparans, Microbacterium sp., and Thermoanaerobacteriaceae, were abundant in the thermophilic biofilter for SO2 removal. (C) 2016 Elsevier Ltd. All rights reserved.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36240
Appears in Collections:水污染控制实验室_期刊论文

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