Energy and Environmental Performance of Bioethanol from Different Lignocelluloses

Table 4

Overall results of environmental performance of all fuel options in all studies.

Impact category		Environmental performance
	Best	−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−→				Worst
GWP	Swi	Sug	Gas	Sto	Hur	Shi
GWP (CO2-neutral)	Sug	Swi	Shi	Sto	Hur	Gas
ADP	Sug	Shi	Sto	Swi	Hur	Gas
ODP	Sug	Sto	Swi	Shi	Hur	Gas
POCP	Sug	Gas	Sto	Shi	Hur	Swi
HTP & ETP	Gas	Shi	Hur	Sto	Swi	Sug
AP	Shi	Gas	Sug	Swi	Sto	Hur
EP	Shi	Gas	Sto	Swi	Sug	Hur

Gas: gasoline; Sto: stover-based ethanol; Sug: sugarcane-based ethanol; Swi: switchgrass-based ethanol; Shi: shives-based ethanol; Hur: hurds-based ethanol.