Kinetic characterization of the biodegradation of solid substrates and application to co-digestion optimization and modeling

Methanization or anaerobic digestion represents one of the major sectors of sustainable development and the circular economy. This sector is part of the implementation of policies to reduce energy dependency and greenhouse gas emissions. Biogas is a renewable energy source that can be used to produce electricity, heat or even directly injected into natural gas networks. Currently, the development of methanization in France is characterised by the great diversity of organic waste used and its use in co-digestion (the simultaneous biodegradation of two or more wastes). However, the lack of solutions specifically adapted to the diversity of waste represents an obstacle to the profitability of methanization units and the development of this sector on an industrial scale. Hence the need for the market to have access to innovative and robust tools to characterize organic waste (inputs) and to predict and optimize the performance of digesters