Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
Bioresour Technol. 2019 Feb;273:25-33. doi: 10.1016/j.biortech.2018.10.033. Epub 2018 Oct 18.
In this study, the effects of biochar amendment on swine manure composting performance at temperatures in the -5 °C-15 °C range was investigated. Monitoring result showed biochar addition significantly prolonged thermophilic stage duration to meet harmless standards of livestock manure compost at 5 °C, assisting a seemingly difficult composting to succeed. Additionally, from viewpoint of thermal balance, biochar increased organic matter degradation derived heat from 50.4% to 86.5% and water vaporization heat from 29.6% to 73.5% while decreasing heat exchange by two-fold. Overall, the results presented herein indicated that biochar has potential to play a positive role in amelioration of animal manure composting at relatively low ambient temperature and provide insight into how biochar influences heat generation and flow during composting.
本研究考察了在-5°C-15°C范围内添加生物炭对猪粪堆肥性能的影响。监测结果表明，添加生物炭可显著延长高温期持续时间，使 5°C下猪粪堆肥达到无害标准，有助于看似难以进行的堆肥成功。此外，从热平衡的角度来看，生物炭增加了 50.4%的有机物降解热和 73.5%的水蒸气化热，同时将热交换降低了两倍。总的来说，本研究结果表明，生物炭在较低环境温度下改善动物粪便堆肥具有潜力，并深入了解了生物炭在堆肥过程中如何影响热量产生和流动。
