REPEATABILITY OF ORGANIC MATTER TRANSFORMATIONS AND GASEOUS EMISSIONS DURING WINDROW COMPOSTING

Didier Oudart (1) , Mélynda Hassouna (2) , Paul Robin (2) , Jean Marie Paillat (3)

1 Chercheur indépendant
2 SAS - Sol Agro et hydrosystème Spatialisation
3 Cirad - Centre de Coopération Internationale en Recherche Agronomique pour le Développement

To assess the repeatability of composting, three heaps composed of wheat straw and pig slurry were set up in a gas monitoring enclosure with the same characteristics for volume, mass and composition. Composting lasted 20 days during which NH3 , CO2 , N2O, CH4 and N2O emissions and internal temperatures were measured. Wet weight, dry matter and carbon balances were repeatable with a maximum coefficient of variation (CV) of 1.5%, and core temperatures with a maximum CV of 3% during thermophilic peak. Largely, gaps were observed for the gaseous emissions with a CV of 11%, 9% and 4%, respectively, for NH 3 -N, CO2 -C and H2 O cumulated emissions. Mass balances are thus essential to check measured flux of gaseous emissions.

Domaines: Sciences du Vivant [q-bio]

Didier Oudart, Mélynda Hassouna, Paul Robin, Jean Marie Paillat. REPEATABILITY OF ORGANIC MATTER TRANSFORMATIONS AND GASEOUS EMISSIONS DURING WINDROW COMPOSTING. Emissions of gas and dust from livestock, IFIP - Institut du Porc, 2013. ⟨hal-01461134⟩