Biomass has wide applications as a source of clean energy and as a raw material for different chemical stocks. Decomposition of biomass model compounds has been investigated in hydro- and solvothermal conditions. These treatments possess very interesting properties and the impact of unique properties was discussed exemplary for the thermal degradation of biomass model compounds. In this study, decomposition reaction of lignin, liquefaction reaction of tar and decomposition reaction of lignin model compounds were carried out to recover useful chemical compounds. The effects of temperature, pressure and reaction time on the decomposition of wastes biomass were investigated through the experiments using a batch reactor. A reaction pathway for the decomposition of wastes biomass was proposed on the basis of the product analyses.
