Journal
BIORESOURCE TECHNOLOGY
Volume 273, Issue -, Pages 25-33Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.10.033
Keywords
Biochar; Composting; Thermal balance; Organic waste
Funding
- National Key Research & Development Program of China [2018YFD0500205, 2016YFD0501401]
- Chu Ko-chen Outstanding Young Scholars Program of the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences [2017RC102]
- Instrument Developing Project of the Chinese Academy of Sciences [YZ201605]
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In this study, the effects of biochar amendment on swine manure composting performance at temperatures in the -5 degrees C-15 degrees C range was investigated. Monitoring result showed biochar addition significantly prolonged thermophilic stage duration to meet harmless standards of livestock manure compost at 5 degrees 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.
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