The burning duration of the biomass briquettes with 37.5% biomass has a mean time
of 49.12 minutes, but they give off a faint scent of burning leaves and produce a faint smoke.
This type of biomass briquette has the longest burning time. The biomass briquettes with 0%
biomass have the shortest burning time (15.48 minutes) but do not give off an aroma and
produces faint smoke. The briquettes with 50% biomass produced a thin smoke and a faint
aroma, and had a mean burning duration of 22.06 minutes. All of the briquettes produced the
same type of flame- orange and small.