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	Bacterial communities and their association with the bio-drying of sewage sludge
	Cai L.; Chen, T. B.; Gao, D.; Yu, J.
	2016
关键词	Bacterial communities Bio-drying Degradation Sewage sludge Water evaporation Water generation microbial consortia moisture-content evaporation compost microorganisms degradation dynamics energy china nov.
英文摘要	Bio-drying is a technology that aims to remove water from a material using the microbial heat originating from organic matter degradation. However, the evolution of bacterial communities that are associated with the drying process has not been researched systematically. This study was performed to investigate the variations of bacterial communities and the relationships among bacterial communities, water evaporation, water generation, and organic matter degradation during the bio-drying of sewage sludge. High-throughput pyrosequencing was used to analyze the bacterial communities, while water evaporation and water generation were determined based on an in situ water vapor monitoring device. The values of water evaporation, water generation, and volatile solids degradation were 412.9 g kg(-1) sewage sludge bio-drying material (SSBM), 65.0 g kg(-1) SSBM, and 70.2 g kg(-1) SSBM, respectively. Rarefaction curves and diversity indices showed that bacterial diversity plummeted after the temperature of the bio-drying pile dramatically increased on d 2, which coincided with a remarkable increase of water evaporation on d 2. Bacterial diversity increased when the pile cooled. During the thermophilic phase, in which Acinetobacter and Bacillus were the dominant genera, the rates of water evaporation, water generation, and VS degradation peaked. These results implied that the elevated temperature reshaped the bacterial communities, which played a key role in water evaporation, and the high temperature also contributed to the effective elimination of pathogens. (C) 2015 Elsevier Ltd. All rights reserved.
出处	Water Research
卷	90
页	44-51
语种	英语
ISSN号	0043-1354
DOI标识	10.1016/j.watres.2015.12.026
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/42869]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Cai L.,Chen, T. B.,Gao, D.,et al. Bacterial communities and their association with the bio-drying of sewage sludge. 2016.

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