Table 2 Cost and operation assumptions and parameters used in the economic model
Raw material costs | |
 Hybrid poplar | $55/dry metric tonne |
 Glycoside hydrolase enzymes | $5/kg protein |
 NaOH | $149/metric tonne |
 CuSO4 | $1.50/kg |
 2,2′-Bipyridine | $30/kg |
 H2O2 | $1.00/kg |
 H2SO4 | $88/metric tonne |
Product selling price | |
 Hydrocarbon biofuel | MFSP, set by solution to economic model |
 Lignin selling price | $0.80/kg |
Biorefinery operation | |
 Biorefinery throughput | 83.3 dry metric tonne/h |
 Biorefinery operation | 8400 h/year |
Installed capital costs | |
 Pre-extraction reactor (90 °C) | $2,133,000 |
 Pre-extraction reactor (120 °C) | $2,879,000 |
 Pretreatment reactor (no O2) | $15,746,000 |
 Pretreatment reactor (with O2) | $28,157,000 |
 Material handling | $4,500,000 |
 Oxygenation | $9,590,000 |
 Pretreatment concentration and lignin separation | $62,893,000 |
 Enzymatic hydrolysis | $65,682,000 |
 Catalytic conversion | $101,617,000 |
 Wastewater treatment | $78,951,000 |
 Storage | $5,544,000 |
 Boiler | $39,386,000 |
 Utilities | $4,192,000 |