Table 4.

Global warming potentials (GWP) due to projected changes in the Danish energy mix

Process configuration	Fossil share in energy mix
	80 %	67 %	50 %
	GWP [kg${}_{{\mathrm{CO}}_{2^{-\mathrm{eq}}}}$ L${}_{\mathrm{ethanol}}^{-1}$]
Base case	3.4	3.0	2.4
Highest yield at 20 % DM	2.7	2.4	1.9
Highest yield at 30 % DM	3.1	2.7	2.1

This was done for the: a. base case (detoxification with ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_4$, PSSF at 12 % DM and 30 ${}^{\circ }$C); b. process configuration with the highest yield at 20 % DM (washing of slurry, PSSF at 40 ${}^{\circ }$C); c. process configuration with the highest yield at 30 % DM (adaptation of yeast + extra nutrients, SHF at 30 ${}^{\circ }$C)