Source segregation and treatment of urine and faeces from dairy cattle reduces GHG and NH emissions in covered storage.

Managing dairy excreta as slurry can result in significant emissions of ammonia (NH) and greenhouse gases (GHGs) during storage and thereafter. Additionally, slurry often has an imbalanced nitrogen (N) to phosphorus (P) ratio for crop fertilization. While various treatments exist to address emissions and nutrient imbalances, each has trade-offs that can result in pollution swapping.

Life cycle assessment of segregating fattening pig urine and feces compared to conventional liquid manure management.

Gaseous emissions from in-house storage of liquid animal manure remain a major contributor to the environmental impact of manure management. Our aim was to assess the life cycle environmental consequences and reduction potential of segregating fattening pig urine and feces with an innovative V-belt system and to compare it to conventional liquid manure management, that is, the reference. Moreover, we aimed at analyzing the uncertainty of the outcomes related to applied emission factors.