Studies on the methane fermentation treatment and utilization on livestock excreta, 8: Treatment of methane fermentation sludge

abonos agricultural chemicals amendement du sol artiodactyla artiodactyle bovidae bovide bovine bovines combustible combustibles digestion energia energie energy energy sources engrais engrais organique enmiendas del suelo excrements excreta fermentation fertilizers fisiologia fonction physiologique fuels hidrocarburos hydrocarbons hydrocarbure mammals metano methane natural resources organic compounds physiological functions physiologie physiology procesamiento processing produit agrochimique recursos recursos naturales resources ressource ressource naturelle rumiante ruminant ruminants soil amendments traitement vertebrados vertebrates vertebre