Page 394 - Biofuels for a More Sustainable Future

350 Biofuels for a More Sustainable Future

Table 12.4 The local weights of the four criteria in environmental aspect and the three
criteria in social-political aspect

CC TA H.Tox PMF
CC 1 [13] [35] [35]
TA [1/3 1] 1 [2 3] [2 3]
H.Tox [1/5 1/3] [1/3 1/2] 1 [1 2]
PMF [1/5 1/3] [1/3 1/2] [1/2 1] 1
[0.4051 0.5414] [0.2513 0.3187] [0.1188 0.1398] [0.0999 0.1176]

SB CED FS
SB 1 [1 2] [1/3 1]
CED [1/2 1] 1 [1/5 1/3]
FS [1 3] [3 5] 1
Local [0.2315 0.3190] [0.1550 0.1756] [0.4816 0.6244]
weights

Table 12.5 The global weights of the criteria for sustainability assessment of bioethanol
production pathways
Dimension Weights Criteria Local weights Global weights
Environmental [0.5709 0.6678] CC [0.4051 0.5414] [0.2313 0.3615]
TA [0.2513 0.3187] [0.1435 0.2128]
H.Tox [0.1188 0.1398] [0.0678 0.0934]
PMF [0.0999 0.1176] [0.0570 0.0785]
Economic [0.1837 0.2149] LCC 1 [0.1837 0.2149]
Social [0.1571 0.1953] SB [0.2315 0.3190] [0.0364 0.0623]
CED [0.1550 0.1756] [0.0244 0.0343]
FS [0.4816 0.6244] [0.0757 0.1219]

In a similar way, the local weights of the four criteria in environmental
aspect and the three criteria in social-political aspect can also be determined,
and the results are presented in Table 12.4.
After this, the global weights of the eights criteria for sustainability assess-
ment of bioethanol production pathways can be determined, and the global
weight of each criterion¼the local weights of the each criterion the
weight of the corresponding dimension to which it belongs to. It is worth
pointing out that there is only one criterion (LCC) in economic aspect, and
the local weight of LCC is 1. The global weights of these eight criteria are
presented in Table 12.5.