生物炭有利于减少猪粪堆肥过程中机械翻堆造成的热量损失。
Biochar is conducive to reduce thermal loss caused by mechanical turning during swine manure composting.
机构信息
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Engineering Laboratory for Yellow River Delta Modern Agriculture, Chinese Academy of Sciences, Beijing 100101, China.
出版信息
Bioresour Technol. 2019 Oct;290:121810. doi: 10.1016/j.biortech.2019.121810. Epub 2019 Jul 15.
The effects of biochar on temperature related performance and thermal loss during swine manure composting, when different mechanical turning frequencies were adopted, were investigated. Monitoring results showed that biochar addition significantly increased accumulated temperature and prolonged duration of thermophilic phase. More importantly, biochar addition remarkably reduced total thermal loss, which was a consensus between decreased heat exchange and incremental water vaporization heat, when there was one turning event. From heat output point of view, biochar decreased heat exchange and incremental water vaporization heat when one and two turning happened. In detail, biochar decreased the proportion of heat exchange from 66.2% to 61.6% and 67.2% to 62.7% respectively, and increased water vaporization heat from 22.1% to 32.9%, 17.3% to 23.9% respectively. Finally, biochar showed a potential to mitigate thermal loss caused by turning during swine manure composting.
研究了在采用不同机械翻堆频率的情况下，生物炭对猪粪堆肥过程中与温度相关的性能和热损失的影响。监测结果表明，添加生物炭显著增加了累积温度，并延长了高温期的持续时间。更重要的是，当进行一次翻堆时，添加生物炭可显著减少总热损失，这是减少热交换和增加水蒸发热的共识。从热量输出的角度来看，当进行一次和两次翻堆时，生物炭减少了热交换和水蒸发热的比例。具体来说，生物炭将热交换的比例从 66.2%降低到 61.6%和 67.2%降低到 62.7%，同时将水蒸发热从 22.1%增加到 32.9%和 17.3%增加到 23.9%。最后，生物炭显示出在猪粪堆肥过程中减少翻堆引起的热损失的潜力。
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