Combined production of biogas and ethanol at high solids loading from wheat straw impregnated with acetic acid: experimental study and techno-economic evaluation

Sustainable Chemical Processes

Table 6 IRRs and NPVs

Configuration	IRR (%)	NPV at 5 % discount rate (MEUR)	NPV at 11 % discount rate (MEUR)	NPV with 20 % taxation at 5 % discount rate (MEUR)	NPV with 30 % taxation at 5 % discount rate (MEUR)
C10–96	6.6	22	−45	10	4
C12.5–96	8.2	43	−27	28	20
C15–96	9.2	54	−16	37	28
C17.5–96	9.6	58	−12	40	31
C20–96	11.0	73	−0.4	53	42
C20–120	10.4	68	−6	48	38
C20–144	10.1	65	−8	46	36
C20–168	9.6	60	−13	42	33
C20–192	9.1	55	−17	38	29

IRRs and NPVs at 5 and 11 % discount rate, and NPVs at 20 and 30 % corporate taxation and 5 % discount rate