Table 4.
Economic assessment assumptions.
| Parameters | Values | Reference |
|---|---|---|
| Plant's location | State of Qatar | |
| Plant lifespan | 25 years | [31] |
| Discount rate | 20% | [31] |
| Annual operating hours | 8000 h/y | [32] |
| Transportation distance | 100 km | [29] |
| Analysis year | 2019 | |
| Vegetable waste procurement cost | 75 USD/T | |
| N2 gas | 0.15 USD/kg | [30]. |
| Water | 0.22 USD/m3 | [30]. |
| Electricity | 0.07 USD/kwh | [30]. |
| Biochar | 0.2 USD/kg | [30]. |
| Bio-oil | 0.4 USD/kg | [29] |
| Syngas | 0.056 USD/kg | [29] |
| Natural gas | 2.545 USD/mmbtu | [29] |
| Ash disposal | 16.3 USD/T | [29] |
| Wastewater discharge | 0.27 USD/T | [29] |