3.4.1. Pyrolysis product yields
The HNO3 washed biomass samples were pyrolyzed in a benchscale
fixed-bed biomass pyrolysis unit in order to investigate the
effect of deashing on the pyrolysis products and yields. Pyrolysis of
the untreated biomass samples under the same conditions was also
carried out for reference purposes. The pyrolysis product yields are
presented in Fig. 4, on a dry and ash-free biomass basis.