Fig.2. Bioethanol lignocellulosic biomass process configurations (i) Separate Hydrolysis & Fermentation (SHF) (ii) Simultaneous Saccharification & Fermentation (SSF) (iii) Simultaneous
Saccharification & Co-Fermentation (SSCF) (iv) Consolidated Bioprocessing (CBP) (Adapted from Hamelinck et al., 2005).