Techno-economic evaluation of integrated first- and second-generation ethanol production from grain and straw

Table 6 Cost of raw materials, chemicals and utilities, and prices of products

Input	Cost/unit	Units
Wheat grain^a	0.23	EUR/kg DM
Wheat straw^b	0.09	EUR/kg DM
Yeast license	0.01	EUR/L ethanol produced
Enzyme 2G	3.00	EUR/10⁶ FPU
Enzyme 1G	3.33	EUR/kg enzyme solution
Sulfur dioxide^c	0.17	EUR/kg
Phosphoric acid (50 %)^c	0.56	EUR/kg
(NH₄)₂HPO ^c₄	0.67	EUR/kg
MgCl ^c₂	0.17	EUR/kg
Ammonia (25 %)^d	0.22	EUR/kg
Antifoam^e	2.22	EUR/kg
Utilities
Process water^f	0.16	EUR/kg
Cooling water^f	0.02	EUR/kg
Natural gas^g	33.00	EUR/MWh
Products
Ethanol	0.56	EUR/L
Biogas, raw^g	33.00	EUR/MWh
Biogas, upgraded to vehicle fuel quality^g	67.00	EUR/MWh
DDGS^h	0.27	EUR/kg dry
Electricity (spot and certificate price)ⁱ	0.67	EUR/MWh
Carbon dioxide^j	0.003	EUR/kg

^a[49], ^b [50]. ^c [51], ^d [52], ^e [53], ^f [54], ^g [45], ^h [55]^, ⁱ [56], ^j [57]

ISSN: 2731-3654