Table 6 Cost overview per tonne of Elodea used (all figures in €/tonne)
From: Using aquatic plant biomass from de-weeding in biogas processes—an economically viable option?
Step | Case 2 Elodea | Case 3 Elodea and straw mix |
|---|---|---|
1. Cutting | 31.68 | |
2. Collecting | ||
3. Transport | 7.40 | |
4. Pre-treatment | 15.00 | 30.00 |
5. Ensiling | 0.00 | 8.00 |
6. Fermentation (negative value = cost saved) | − 0.19 | 52.65 |
7. Fermentation residue disposal | 3.79 | 5.03 |
8. Elodea gate fee to offset disposal cost (income) | − 30.00 | − 30.00 |
9. Total for lines 4–8 loss/(profit) | − 11.40 | 65.68 |
10. Total for lines 1–7 loss/(profit) | 57.68 | 134.76a |