Journal
BIORESOURCE TECHNOLOGY
Volume 288, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121576
Keywords
C/N ratio; Bacterial community; Key bacterial consortia; Enzyme activity; Composting efficiency
Funding
- National Key Research and Development Program of China [2018YFD0500201]
- Fundamental Research Funds for the Central Universities [KYZ201871, KJQN201746]
- Priority Academic Program Development of the Jiangsu Higher Education Institutions (PAPD)
- 111 project [B12009]
- Innovative Research Team Development Plan of the Ministry of Education of China [IRT_17R56]
- Top-notch Academic Programs Project of the Jiangsu Higher Education Institution [PPZY2015A061]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX17_0583]
- Special Fund for Agro-scientific Research in the Public Interest [201503110]
- China Scholarship Council
Ask authors/readers for more resources
A consortium of key bacterial taxa plays critical roles in the composting process. In order to elucidate the identity and mechanisms by which specific bacterial species drive high-efficiency composting, the succession of key bacterial consortia and extracellular enzymes produced during the composting process were monitored in composting piles with varying initial C/N ratios. Results showed that C/N ratios of 25 and 35 enhanced composting efficiency through elevated temperatures, higher germination indices, enhanced cellulose and hemicellulose degradation, and higher cellulase and dehydrogenase activities. The activities of cellulase and beta-glucosidase, cellulase and protease, and cellulase and beta-glucosidase exhibited significant relationships with bacterial community composition within the mesophilic, thermophilic, and mature phases, respectively. Putative key taxa, linked to a higher composting efficiency, such as Nonomuraea, Desemzia, Cellulosimicrobium, Virgibacillus, Clostridium, and Achromobacter, exhibited significantly positive relationships with extracellular enzyme activities, suggesting a significant contribution to these taxa to the development of composting maturity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available