Figure 7
Ethanol cost estimations from current models and previous techno-economic studies on ethanol production process (2010 prices). (1) Sendich et al. [53] - Consolidated bio-processing (CBP), (2) Sendich et al. [53] - Simultaneous saccharification and co-fermentation (SSCoF), (3) Aden et al. [19], (4) Eggeman and Elander [31] - Dilute acid pretreatment, (5) Eggeman and Elander [31] - Hot water pretreatment, (6) Wallace et al. [54], (7) Laser et al. [30] - Base case- dilute acid pretreatment, (8) Wingren et al. [55] - Separate hydrolysis and fermentation, (9) Wingren et al. [55] - Simultaneous saccharification and fermentation (SSF), (10) Wingren et al. [56], (11) Gnansounou et al. [32](12) Hamelinck et al. [57] - Long term technology (Hot water pretreatment, CBP), (13) Hamelinck et al. [57] - Short term technology (Dilute acid pretreatment, SSF), (14) Hamelinck et al. [57] - Middle term technology (Steam explosion pretreatment, SSCoF), (15) Kazi et al. [29] - Dilute acid pretreatment, (16) Kazi et al. [29] - Hot water pretreatment.