Comparison of organic matter degradation and microbial community during thermophilic composting of two different types of anaerobic sludge
| Autor: | Kiyohiko Nakasaki, Yoshito Idemoto, Michiharu Abe, Le Thi Hong Tran, Analiza P. Rollon |
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| Rok vydání: | 2009 |
| Předmět: |
Environmental Engineering
Bioengineering Biology Protein degradation complex mixtures Bacteria Anaerobic Soil Bioreactors Organic matter Organic Chemicals Waste Management and Disposal Soil Microbiology chemistry.chemical_classification Sewage Waste management Renewable Energy Sustainability and the Environment fungi General Medicine Biodegradation Archaea Anaerobic digestion Biodegradation Environmental chemistry Microbial population biology Environmental chemistry Sewage treatment Fermentation Mesophile |
| Zdroj: | Bioresource Technology. 100:676-682 |
| ISSN: | 0960-8524 |
| Popis: | Changes in organic matter degradation and microbial communities during thermophilic composting were compared using two different types of anaerobic sludge, one from mesophilic methane fermentation, containing a high concentration of proteins (S-sludge), and the other from thermophilic methane fermentation, containing high concentrations of lipids and fibers (K-sludge). The difference in the organic matter degradation rate corresponded to the difference in the organic matter constituents; the CO(2) evolution rate was greater in the composting of S-sludge than of K-sludge; moreover, the NH(3) evolution resulting from the protein degradation was especially higher in the composting of S-sludge. Then the differences in the microbial communities that contributed to each composting were determined by the PCR-DGGE method. Ureibacillus sp., which is known as a degrader with high organic matter degradation activity, was observed during the composting of S-sludge, whereas Thermobifida fusca, which is a well known thermophilic actinomycete that produces enzymes for lignocellulose degradation, were observed during the composting of K-sludge. |
| Databáze: | OpenAIRE |
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