Focus on Composting

What is composting?

Two thirds of the waste produced annually in France is organic waste of domestic, agricultural or industrial origin, capable of being processed or recycled through composting. Composting is the aerobic, i.e. with oxygen, biological decay of organic matter. The final product obtained is recyclable as, for example, an additive to improve soil quality in agriculture.
Many processes are involved in composting (biological, chemical, physical and thermal) and they are dependent on each other.
Understanding these processes and knowing the parameters that are involved is a necessary part of optimising the composting procedure.

What is Cemagref doing for composting?

The ever increasing demand to process waste by composting led Cemagref to take a close look at different angles of approach, with the key aim of improving the process in terms of technical performance and environmental impact. Composting processes are modelled and gaseous emissions are monitored, thereby creating new procedures and simulation and monitoring tools for the process. The biodegradability of organic waste is also being classified.

Collecting gas from compost © M Carrouée Composting green waste © M Carrouée