Review Article
Energy and Environmental Performance of Bioethanol from Different Lignocelluloses
Table 5
Net energy summary excluding coproducts, no allocation.
| Feedctock | | Energy use (MJ/) | | Agriculture | Biorefinery | Total input | Ethano | Total output | Net energy value (NEV) |
| Stover | Luo et al. [5] | 10.0 | 0.5 | 10.5 | 21.2 | 21.2 | 10.7 |
| Corn | Patzek [56] | 9.9 | 17.0 | 26.9 | 21.2 | 21.2 | 5.7 | Pimentel and Patzek [7] | 10.0 | 17.0 | 27.0 | 21.2 | 21.2 | 5.8 | Shapouri and McAloon [30] | 5.3 | 15.2 | 20.5 | 21.2 | 21.2 | 0.7 | Graboski [29] | 5.6 | 16.6 | 22.2 | 21.2 | 21.2 | 1.0 |
Dias de Oliveira et al. [28] | 6.3 | 14.1 | 20.4 | 21.2 | 21.2 | 0.8 |
Wu et al. [9] | 6.6 | 12.5 | 19.1 | 21.2 | 21.2 | 2.1 |
| Switchgrass |
Wu et al. [9] | 2.4 | 1.0 | 3.4 | 21.2 | 21.2 | 17.8 |
| Sugarcane | Hadzhiyska et al. (base case) [32] | 6.5 | 0.1 | 6.6 | 21.2 | 21.2 | 14.6 | Hadzhiyska et al. (future case) [32] | 2.7 | 0.5 | 3.2 | 21.2 | 21.2 | 18.0 | Pimentel and Patzek [57] | 2.6 | 3.4 | 6.0 | 21.2 | 21.2 | 15.2 |
Diaz de Oliveira et al. [28] | 5.6 | 0.6 | 6.2 | 21.2 | 21.2 | 15.0 | Macedo et al. [36] | 2.0 | 0.3 | 2.3 | 21.2 | 21.2 | 18.9 |
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he unit of energy use is MJ per litre of ethanol produced from biorefinery. ormalized energy value for ethanol based on lower heating value (LHV).
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