A Comparison of Biochars Produced by Two Slow Pyrolysis Methods

D. Dickinson, K.A. Kiep, J. Busse, F. Ronsse & W. Prins
Biochars produced by two different slow pyrolysis methods across a range of pyrolysis temperatures using the same wood-pellet feedstock were characterized by CHN elemental and proximate analysis, oxygen bomb calorimetry, and N2 gas adsorption. Higher pyrolysis temperatures resulted in biochar with higher carbon content, ash content, HHV, and BET surface area, while hydrogen content and volatile matter content were decreased. These properties were also all observed to be materially related. Significantly, the trends in properties...