Table 6 Environmental eco-scores of various bio-products and VFA processes for 1 kg feed
From: Eco-efficient recovery of bio-based volatile C2–6 fatty acids
Products | Scenario | EI-99 [EI-99-pts] | CED [MJ-eq] | UBP’97 [UBP] | GWP [kg CO2-eq] | References |
|---|---|---|---|---|---|---|
Butanol | Best | 0.009 | 2.34 | 193.5 | 0.430 | Aneke and Gorgens [62] |
Worst | 0.033 | 7.81 | 230.9 | 0.560 | ||
Acetic acid | Best | 0.004 | 0.99 | 83.7 | 0.189 | Li et al. [26] |
Worst | 0.014 | 3.37 | 98.5 | 0.263 | ||
2,3-Butanediol | Best | 0.005 | 1.13 | 95.5 | 0.215 | Haider et al. [63] |
Worst | 0.017 | 3.85 | 112.9 | 0.298 | ||
VFAs | Best | 0.001 | 0.35 | 28.5 | 0.063 | This study |
Worst | 0.005 | 1.15 | 34.1 | 0.088 |