1. Pyrolysis of waste Biomass: Towards sustainable development2. Biomass pyrolysis system based on Life cycle assessment and Aspen plus analysis and kinetic modelling3. Biomass gasification integrated with Fischer-Tropsch reactor: Techno-economic approach4. Energy recovery from biomass through gasification technology5. Life Cycle Assessment applied to Waste-to-Energy Technologies6. Waste disposal in Selected Favelas (slums) of Rio de Janeiro7. Waste to value added functional catalysts for transesterification process in biodiesel production