Glycine and glycerol were used as the model compounds of protein and fattiness, respectively. A continuous tubular-flow reactor was used for the gasification experiments operated at 380-500 degrees C and 25 MPa with or without Na(2)CO(3) catalyst. Compared with a negative effect on glycerol gasification, Na(2)CO(3) could increase hydrogen yield and Chemical Oxygen Demand (COD) destruction efficiency, and the catalytic performance of 0.1 wt% Na(2)CO(3) was better than that of 0.2 wt% for glycine gasification. When 1 wt% glycine solution with 0.1 wt% Na(2)CO(3) , or 1 wt% glycerol solution without Na(2)CO(3) was gasified at 500 degrees C with the residence time of 0.98 min, their corresponding gasification efficiencies were up to 95.8% and 98%, and hydrogen yields could reach 4.14 and 5.08 mol/mol, respectively. Hydrogen molar fraction in gaseous product was about 60% and liquid effluents could be reutilized. Correspondingly, the ideal overall reaction equations for glycine and glycerol gasification were proposed. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.