Offre de thèse : Negative carbon systems based on solar conversion of biomass

Subject : In order to ensure the ambitious objectives of reducing CO2 emissions, it appears necessary to implement processes with a negative carbon footprint. Solar conversion of biomass by pyrolysis transforms part of the biomass into solid carbon. This carbon having been absorbed in the form of CO2 for plant growth, the system thus makes it possible to convert atmospheric CO2 into solid carbon, which can be valorized or sequestered. The subject will focus on the conversion of biomass by concentrated solar energy. The pyrogasification process will be explored numerically thanks to CFD simulations (ANSYS FLUENT) and models will be validated experimentally in different types of reactors (tubular or rotary) available in the lab. A techno-economic analysis at the scale of the process will be proposed based on dynamic simulation results. LCA skills would be a plus to determine the overall impact of the system.