For climate change, Sce.CHP has the lowest CO2 eq. emissions
per ton of swine carcass followed by Sce.Flare and Sce.Ref. The
comparison with the baseline scenario for this impact category (i.e.,
Sce.Ref) indicated that Sce.Flare could reduce 3.3% of CO2 eq.
(114.5 kg) per functional unit due to methane conversion into CO2
by biogas flaring. For Sce.CHP, due to the potential for biogas usage
for electricity and heat production, it was possible to reduce by
11.1% the impacts (389.4 kg CO2 eq.). Sce.Comp had approximately
the same GHG emissions of the Sce.Ref with 3552 kg CO2 eq.