Methane potential of pig slurry and manure - Archive ouverte HAL Access content directly
Conference Poster Year :

Methane potential of pig slurry and manure

Potentiel méthanogène des effluents porcins

(1) , (2) , (3) , (4) , (4) , (4) , (5)
1
2
3
4
5

Abstract

To optimize the efficiency of agricultural biogas units, 54 samples of pig slurry and manure were collected, and their methane potential (MP) was evaluated. They were characterized by the type of floor in the piggery, the physiological stage of animals, the management and the freshness of slurry and manure. The MP of the slurry of gestating sows, fattening pigs and piglets was 4, 13 and 28 Nm 3 CH 4 /t raw material, respectively. Many factors can explain this large difference, but the main one could be the water content, which also greatly affected the MP of slurry. The MP was 67 ± 3, 52 ± 13 et 41 ± 8 Nm 3 CH 4 /t raw material for accumulated solid manure of piglets, fattening pigs and gestating sows, respectively, but less differences were observed when expressed on an organic-matter basis (245, 197 and 230 Nm 3 CH 4 /t OM respectively). The MP of the faeces of fattening pigs was twice as high as that of the solid fraction of decanted-centrifuged slurry (71 ± 10 vs 37 ± 0.2 Nm 3 CH 4 /t raw material, respectively). The MP of slurry decreased as its duration of storage increased, for example, by 57% when stored for 4-5 months (MP expressed on an organic-matter basis). The MP of manure also decreased as its duration of storage increased, for example, by 16-41% depending on its type when stored for 2-3 months.
La méthanisation constitue un levier d’action pour réduire lesémissions de GES des effluents d’élevage (MTES, 2019). Toutefois, le dimensionnement des installations nécessite de bien connaitre leur Potentiel Méthanogène (PM). Les instituts techniques animaux (Ifip, Idele, Itavi) ont collecté plus de 160 échantillons de déjections porcines, bovines et avicoles, de nature très contrastée. Ces effluents ont fait l’objet d’une analyse chimique et d’une détermination de leur PM par INRAE Transfert Environnement de Narbonne. Dans ce poster, seuls seront présentés les PM des 54 échantillons d’effluents porcins.
Fichier principal
Vignette du fichier
env09.pdf (1007.21 Ko) Télécharger le fichier
Vignette du fichier
env09_Levasseur_V2.pdf (3.03 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03752276 , version 1 (16-08-2022)

Identifiers

  • HAL Id : hal-03752276 , version 1

Cite

Pascal Levasseur, Vincent Blazy, François Gervais, Olivier Azam, Bastien Zennaro, et al.. Potentiel méthanogène des effluents porcins. 54es Journées de la Recherche Porcine, Feb 2022, en ligne, France. Ifip, Journées de la Recherche Porcine, 54, 54es Journées de la Recherche Porcine. ⟨hal-03752276⟩
10 View
3 Download

Share

Gmail Facebook Twitter LinkedIn More