Journal
BIORESOURCE TECHNOLOGY
Volume 200, Issue -, Pages 921-927Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.11.019
Keywords
Biochar; Poultry manure; Composting; Temperature evolution; Net degree-hour parameter
Funding
- Czestochowa University of Technology (Poland) [BS/PB401-301/11]
- Polish National Centre for Research and Development grant GUTFEED-innovative nutrition in sustainable poultry production realized in the framework of BIOSTRATEG -
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Biochar as an amendment could have an impact on composting dynamics. This study investigated the effect of the addition of biochar (B) to poultry manure (P) mixed with wheat straw (S) (i.e. P:S, P:S + 5%B and P:S + 10%B) on temperature and carbon dioxide emission. For temperature studies a modified equation for net degree-hour parameter DHnet (degrees C h day(-1)) was proposed. The modified equation takes into account ambient temperature. The highest daily temperatures DHnet were observed on day 2 and the mixture with the highest addition of biochar (P:S + 10%) reached the max temperature. The period of thermophilic temperatures (40 degrees C>) was shorter for mixtures amended with biochar. The addition of biochar increased C-CO2 emission and the total C-CO2 emission were higher about 6.9% and 7.4% for P:S + 5%B and P:S + 10%B, respectively. (C) 2015 Elsevier Ltd. All rights reserved.
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