Table 3.
Production costs of cellulose nanofibers at different carboxylic content (laboratory level). The price of energy was 0.08 €/kW·h, price of NaClO was 0.38 €/kg, prices correspond to the Spanish market.
| Sample | Chemicals Cost (€/kg) | Energy Cost (€/kg) | Energy Consumption (€/kg) | Total Cost (€/kg) |
|---|---|---|---|---|
| CNF-2 | 2.78 | 0.46 | 11.7 | 14.94 |
| CNF-3 | 3.02 | 0.47 | 9.36 | 12.85 |
| CNF-4 | 3.27 | 0.49 | 6.24 | 10.00 |
| CNF-5 | 3.52 | 0.54 | 4.68 | 8.74 |
| CNF-6 | 3.77 | 0.61 | 3.90 | 8.28 |
| CNF-8 | 4.26 | 0.79 | 3.12 | 8.17 |
| CNF-10 | 4.76 | 1.04 | 2.34 | 8.14 |
| CNF-15 | 6 | 1.73 | 1.56 | 9.29 |