The functional unit selected is 1 GJ of bioenergy produced from
treating dairy waste, produced during 45 days, which was the
duration of completing a scenario. Results obtained from the study,
nonrenewable primary energy requirement (GJ) and GHG emission
(kg CO2 eq.) were expressed with respect to unit of bioenergy produced.
The geographical location is the US and the simulation was
carried out for 1 year. Details about the system boundary are given
in