Page 76 - Materials Chemistry, Second Edition
P. 76
62 N. E. Korres
Fig. 12 Flowchart of biogas/biomethane production from a a crop-based, and b agriculture or
non-food and manure feedstocks (animal-based production system is included)
to the 2009 EU Renewable Directive (EC 2009) for the evaluation of grass
biomethane sustainability as a transport fuel, the environmental impact in terms of
GHG emissions was expressed as g CO 2 equivalent (CO 2 e) MJ -1 energy replaced.
Borjesson et al. (2011) in their LCA of biofuels in Sweden including biogas from
organic waste, manure, and crops used ‘‘environmental impact per MJ fuel’’ as FU.
