Effect of aeration rates on enzymatic activity and bacterial community succession during cattle manure composting
| Autor: | Zhang Xi, Haibo Meng, Haibin Zhou, Jiarui Wang, Ding Jingtao, Mianshen Ge, Shen Yujun, Cheng Hongsheng, Jun Zhou, Ran Li, Wang Jian |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Environmental Engineering Urease Bioengineering Cellulase 010501 environmental sciences 01 natural sciences Soil 010608 biotechnology Animals Food science Waste Management and Disposal 0105 earth and related environmental sciences biology Bacteria Renewable Energy Sustainability and the Environment Chemistry Composting Acid phosphatase Temperature General Medicine Straw Manure Invertase biology.protein Alkaline phosphatase Cattle Aeration |
| Zdroj: | Bioresource technology. 304 |
| ISSN: | 1873-2976 |
| Popis: | In order to explore changes in microbial enzyme activity and bacterial community, a 60-day composting experiment was conducted using cattle manure and straw under aeration rates of 0.45, 0.68, and 0.90 L min−1 kg−1 fresh weight. High aeration rate increased the cellulase, urease, alkaline and acid phosphatase activities, but decreased that of invertase and catalase. Cellulase, alkaline phosphatase and catalase were the main enzymes that affected the composting process. Microbial analysis showed that high aeration rate increased the uniformity of bacterial community in thermophilic phase, but decreased that in mature phase. Different aeration rate affected the bacterial community structure and further influenced the relationship between enzyme and functional bacteria. Regulating the temperature, moisture content and EC in specific phases to affect bacterial community succession could provide guidance for improving maturity of composting. |
| Databáze: | OpenAIRE |
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