Production of hydrogen gas by thermochemical transition of Lauan in fixed bed gasification

The fixed bed gasification reactor with 1 m hight and 10.2 cm diameter was utilized for the hydrogen production from biomass wastes. Lauan sawdust was used for non-catalytic and catalytic gasification reaction as a sample in the fixed bed reactor. The fixed bed temperature and catalyst are the major variables affecting the process operation. Thus, the effect of fixed bed temperature and the catalysts on gas composition were studied at the temperature range from 400 V to 700°C, The yield of hydrogen was increased at higher temperature in the fixed bed reaction. Fractions of hydrogen, carbon monoxide and methane gas in the product gas increased when sodium carbonate (Na₂CO₃) and potassium carbonate (K₂CO₃) catalysts were used, Furthermore, sodium carbonate catalyst was more effective to obtain higher hydrogen yield compared to potassium, carbonate catalyst.