(liquid), and bio-gas (gas). Bio-char (solid) has the highest carbon content. Tar (bio-oil), which is a liquid, is a high molecular weight compounds, with this liquid there are some non-condensable gases are produced, which are CO,
CO2, H2, C1-C4 hydrocarbons (one of the most disadvantages of the biomass pyrolysis). Thus, a second reaction is required to dissociate the gas from the liquid