Succession of Total and Active Microbial Community During the Composting of Anaerobic Digested Residue

Aerobic composting of anaerobic digested residue (DR) is an effective post-treatment method to develop a zero emission process; however, there are knowledge gaps in the understanding of this process. Microbial succession is a critical parameter for examining the principle of material transformation...

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Bibliographic Details
Published in:Waste and biomass valorization 2020-09, Vol.11 (9), p.4677-4689
Main Authors: Wang, Ting-Ting, Sun, Zhao-Yong, Wang, Shi-Peng, Tang, Yue-Qin, Kida, Kenji
Format: Article
Language:English
Subjects:
Anaerobic microorganisms
Community composition
Composting
Deoxyribonucleic acid
Direct reduction
DNA
Ecological succession
Engineering
Environment
Environmental Engineering/Biotechnology
Gene sequencing
Genetic transformation
Industrial Pollution Prevention
Microorganisms
Next-generation sequencing
Original Paper
Renewable and Green Energy
Residues
Ribonucleic acid
RNA
rRNA 16S
Waste Management/Waste Technology
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Summary:Aerobic composting of anaerobic digested residue (DR) is an effective post-treatment method to develop a zero emission process; however, there are knowledge gaps in the understanding of this process. Microbial succession is a critical parameter for examining the principle of material transformation and maturity throughout the composting process. This study compared the total (DNA level) and active (RNA level) microbial community succession during the DR composting process by using 16S rRNA gene high-throughput sequencing. A significantly higher richness and diversity for the microbial community on the RNA level compared with the DNA level was observed. Beta -diversity analysis revealed significant differences in community composition and dynamics between the DNA and RNA of microbes. Moreover, DNA analysis exhibited large parts of anaerobic microbes in composting samples, indicating its bias to assess the metabolically active microbial community succession. The RNA dataset showed that Proteobacteria , Firmicutes , and Bacteroidetes predominated in the phylum level, while Crenarchaeota was distinctive. This indicated that the members in these phyla are crucial to material transformation and product maturity during the aerobic composting of DR. Graphic Abstract
ISSN:1877-2641
1877-265X
DOI:10.1007/s12649-019-00779-7