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Title
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Temperature affects microbial abundance, activity and interactions in anaerobic digestion
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Author
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Abstract
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| 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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Language
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English
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Source (journal)
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Bioresource technology. - Barking
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Publication
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Barking
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2016
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ISSN
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0960-8524
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DOI
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10.1016/J.BIORTECH.2016.02.132
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Volume/pages
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209
(2016)
, p. 228-236
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ISI
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000372833500029
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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