262
15.4 Discussion and Conclusion
An integrated sustainability assessment model of biofuel that uses several biomass
sources was developed in this chapter. Figure 15.10 summarizes the results of the
scenario analysis, which uses six different cases to achieve Japan’s national target
for bioethanol and biodiesel. This figure suggests that Japan needs to import more
than 40 % of its bioethanol to achieve the national target in 2035, except in case 6
(maximizing domestically produced bioethanol) (Fig. 15.10a). Similarly, Japan
needs to import at least 59 % of its total biodiesel to achieve the 2035 target
Fig. 15.9 Ecological footprints of six biodiesel supply cases from 2015 to 2035
Fig. 15.10 EF total and domestic biofuel ratio by case. (a) Bioethanol (b) Biodiesel
O. Saito
15.4 Discussion and Conclusion
An integrated sustainability assessment model of biofuel that uses several biomass
sources was developed in this chapter. Figure 15.10 summarizes the results of the
scenario analysis, which uses six different cases to achieve Japan’s national target
for bioethanol and biodiesel. This figure suggests that Japan needs to import more
than 40 % of its bioethanol to achieve the national target in 2035, except in case 6
(maximizing domestically produced bioethanol) (Fig. 15.10a). Similarly, Japan
needs to import at least 59 % of its total biodiesel to achieve the 2035 target
Fig. 15.9 Ecological footprints of six biodiesel supply cases from 2015 to 2035
Fig. 15.10 EF total and domestic biofuel ratio by case. (a) Bioethanol (b) Biodiesel
O. Saito