Journal
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
Volume 30, Issue 6, Pages 1737-1746Publisher
SPRINGER
DOI: 10.1007/s11274-013-1593-9
Keywords
Thermophilic composting phase; Genera and species diversities; Culturable bacterial community; Culturable thermophilic microbe number; Degradation abilities
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Funding
- National Natural Science Foundation of China [41101231]
- National Basic Research Program of China [2011CB100503]
- Chinese Ministry of Science and Technology [2013AA102802]
- Agricultural Ministry of China [201103004]
- Key Technology R&D Program of Jiangsu, China [BE2012377]
- Jiangsu Postdoctoral Science Foundation [1102079C]
- Priority Academic Program Development of the Jiangsu Higher Education Institutions (PAPD), 111 project [B12009]
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Composting is a process of stabilizing organic wastes through the degradation of biodegradable components by microbial communities under controlled conditions. In the present study, genera and species diversities, amylohydrolysis, protein and cellulose degradation abilities of culturable bacteria in the thermophilic phase of composting of cattle manure with plant ash and rice bran were investigated. The number of culturable thermophilic bacteria and actinomyces decreased with the increasing temperature. At the initiation and end of the thermophilic phase, genera and specie diversities and number of bacteria possessing degradation abilities were higher than during the middle phase. During the thermophilic composting phase, Bacillus, Geobacillus and Ureibacillus were the dominant genera, and Geobacillus thermodenitrificans was the dominant species. In later thermophilic phases, Geobacillus toebii and Ureibacillus terrenus were dominant. Bacillus, at the initiation, and Ureibacillus and Geobacillus, at the later phase, contributed the multiple degradation abilities. These data will facilitate the control of composting in the future.
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