Improved fermentation performance in an expanded ectopic fermentation system inoculated with thermophilic bacteria

文献类型： 外文期刊

第一作者： Guo, Hui

作者： Guo, Hui;Peng, Xiawei;Zhu, Changxiong;Geng, Bing;Liu, Xue;Ye, Jing;Tian, Yunlong

作者机构：

关键词： Cow wastewater;Ectopic fermentation system;Thermophilic bacterial consortium;T-RFLP

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

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收录情况： SCI

摘要： Previous research showed that ectopic fermentation system (EFS) inoculated with thermophilic bacteria is an excellent alternative for cow wastewater treatment. In this study, the effects of thermophilic bacterial consortium on the efficiency and quality of the fermentation process in EFS were evaluated by measuring physicochemical and environmental factors and the changes in organic matter composition. In parallel, the microbial communities correlated with fermentation performance were identified. Inoculation of EFS with thermophilic bacterial consortium led to higher temperatures, increased wastewater requirements for continuous fermentation, and improved quality of the litters in terms of physicochemical factors, security test, functional group analysis, and bacterial community composition. The relationship between the transformation of organic component and the dominant bacteria species indicated that environmental factors contributed to strain growth, which subsequently promoted the fermentation process. The results highlight the great potential of EFS model for wide application in cow wastewater treatment and re-utilization as bio-fertilizer. (C) 2015 Elsevier Ltd. All rights reserved.

分类号： Q

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