In particular, we focused on three variables that are generally the most troublesome for the production of high-quality pellets from the broadleaved species, namely bulk density, ash content, and lower heating value. We found that the beech pellets showed satisfactory bulk density (average...
while sawdust from hardwood (precursor of the hydrochar) was measured in the transmittance mode as KBr pellets. The FTIR spectra of the mentioned materials (zoomed to similar sizes in reflectance mode, or, in the case of sawdust, recalculated to absorbance, which is approximately equivalent) are...