Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
679180 | Bioresource Technology | 2016 | 33 Pages |
Abstract
Temperature is a major factor determining the performance of the anaerobic digestion process. The microbial abundance, activity and interactional networks were investigated under a temperature gradient from 25 °C to 55 °C through amplicon sequencing, using 16S ribosomal RNA and 16S rRNA gene-based approaches. Comparative analysis of past accumulative elements presented by 16S rRNA gene-based analysis, and the in-situ conditions presented by 16S rRNA-based analysis, provided new insights concerning the identification of microbial functional roles and interactions. The daily methane production and total biogas production increased with temperature up to 50 °C, but decreased at 55 °C. Increased methanogenesis and hydrolysis at 50 °C were main factors causing higher methane production which was also closely related with more well-defined methanogenic and/or related modules with comprehensive interactions and increased functional orderliness referred to more microorganisms participating in interactions. This research demonstrated the importance of evaluating functional roles and interactions of microbial community.
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Physical Sciences and Engineering
Chemical Engineering
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Authors
Qiang Lin, Jo De Vrieze, Jiabao Li, Xiangzhen Li,