Terminology

Before delving into the issues signalled above, it will be necessary to devote some attention to definitions. For example, the various types of biofuel will need to be explained, together with the crops normally employed in their respective production, for this has significant impacts on their sustainability credentials. Attention also needs to be paid to what sort of biomass is optimal for the produc­tions of both fuel types. The production processes, however, will be discussed later under ‘Lifecycle Analysis’ (i. e. Sect. 4).