Investigation of thermochemical conversion of biomass in supercritical water using a batch reactor

► Biomass gasification efficiencies are in the same range for all types of biomass. ► Thermodynamic changes of state are functions of elemental composition, not biomass species. ► The oxidation state of carbon atom of biomass is a key variable in thermodynamics of decomposition. ► Temperature and residence time are important operating parameters for SCW gasification.