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.

中文翻译：

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生物炭改良剂对相对较低环境温度下猪粪堆肥过程中热平衡的积极影响


在这项研究中，研究了生物炭改良剂在-5°C–15°C范围内对猪粪堆肥性能的影响。监测结果显示，生物炭的添加显着延长了高温阶段的持续时间，达到了5℃下畜禽粪便堆肥的无害化标准，帮助看似困难的堆肥取得了成功。此外，从热平衡的角度来看，生物炭将有机物降解产生的热量从50.4％增加到86.5％，将水汽化热量从29.6％增加到73.5％，同时将热交换减少两倍。总体而言，本文提出的结果表明，生物炭有可能在改善相对较低环境温度下的动物粪便堆肥方面发挥积极作用，并提供对生物炭如何影响堆肥过程中热量产生和流动的见解。