Present work is aimed at developing a model for biomass gasification in a system into exercise in Taiwan. The treated biomass, or refuse derived fuel from biomass (RDF), is preliminary experimentally characterized in an electro-thermal furnace in terms of proximate and ultimate analysis. The lower heating value is then determined. The gasification model, although simple, allows evaluating the optimal control strategy for the production of the syngas of highest quality. A sensitivity analysis is also performed to highlight the effects of the initial moisture content on the gasification temperature and syngas composition.