Wojciech Czekała1, Krystyna Malińska2, Rafaela Cáceres3, Damian Janczak1, Jacek Dach1, Andrzej Lewicki1. 1. Faculty of Agronomy and Bioengineering, Poznan University of Life Sciences, Wojska Polskiego 50, 60-637 Poznań, Poland. 2. Institute of Environmental Engineering, Częstochowa University of Technology, Brzeźnicka 60A, 42-200 Częstochowa, Poland. Electronic address: kmalinska@is.pcz.czest.pl. 3. GIRO Unit, Research and Technology, Food and Agriculture (IRTA), Carretera de Cabrils km 2, 08348 Cabrils, Barcelona, Spain.
Abstract
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 (°Chday(-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°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.
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 pan class="Chemical">carbon dioxide emission. For temperature studies a modified equation for net degree-hour parameter DHnet (°Chday(-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°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.
Authors: Yue Wang; Shanjiang Liu; Wentao Xue; He Guo; Xinrong Li; Guoyuan Zou; Tongke Zhao; Hongmin Dong Journal: Int J Environ Res Public Health Date: 2019-10-16 Impact factor: 3.390