There is a growing interest in alternative sources of clean, safe and renewable energy, and in technologies for processing these sources into fuels. Among these processes, the supercritical water gasification (SCWG) reaction, for hydrogen production, and the Fischer-Tropsch (FT) synthesis reaction, for liquid fuels production, have occupied a prominent role. In this context, this project aims to perform thermodynamic analysis of reactions involved in the transformation of biomass into fuels, using for it, global optimization techniques. Methodologies will be applied to minimize Gibbs energy, in systems with constant pressure and temperature, and entropy maximization, in systems with constant pressure and enthalpy. The problems will be formulated in the form of nonlinear programming, and the proposed methodology will be implemented and solved in the software GAMS. The thermodynamic analysis of the transformation of different sources of biomass such as ethanol, glycerol, glucose, cellulose, lignin, sugar cane bagasse and microalgal biomass in hydrogen or syngas, through the SCWG reaction will be performed first. Later, the use of syngas produced will be thermodynamically evaluated for the production of liquid fuels such as methanol, ethanol, DME, gasoline and diesel, by the Fischer-Tropsch synthesis reaction. We hope to contribute to a further elucidation of the more favorable reaction conditions for each of the cases examined, also considering strategies to increase the conversion of reactants and the productivity of the desired products, as well as the realization of the energy characterization of each one of the processes.
News published in Agência FAPESP Newsletter about the scholarship: