Methanization, new opportunities for territories. National technical day - 13 May 2014, Paris. Collection of interventions. The Methanization Autonomy Nitrogen energy plan

This publication contains proceedings of a conference on methanization projects and techniques, notably in rural areas (there were 140 rural installations in France in 2014 and 20 centralised ones). Contributions thus give an overview of the present development of this sector, and of its perspectives over the medium to long term. A first set of contributions addressed the performance of a panel of farm-based and centralised methanization installations with technical, energy, environmental, agronomic and social assessments for 8 units (lessons learned from installation follow-up, recommendations for operation optimisation of 2 units), and a profitability study performed on 21 installations (lessons learned, profitability evolution for 2 installations). The second set of contributions addressed development perspectives of the methanization sector over the medium to long term. Contributions addressed the following issues: how to mobilise and process bio-wastes from big producers, other possible sources (energetic crops, intermediate crops for energy purposes or CIVE or crop residues), the use of digestate to reduce the use of mineral fertilizers, and emerging energetic valorisations of biogas. A last part presents the Methanization Autonomy Nitrogen Energy Plan (the EMAA plan) which aims at managing and valorising nitrogen (notably from breeding effluents), at developing a French model of agricultural methanization. The stakes of methanization for energy transition are outlined, and the operation of a methanization installation is described