The proposed technology offers environmentally friendly production of second generation biofuels from lignocellulosic biomass not intended for human consumption (agricultural waste, weeds, straw, wood-processing waste). Simple pre-treatment (mechanical) is combined with brief boiling and enzymatic hydrolysis. Fermentation feed separation and enzyme recirculation is provided via specific membrane separation technologies to decrease the production costs, remove fermentation inhibitors and balance hydrolysis with fermentation. Selection of the most desirable biofuel type (bioethanol, biobutanol) is available.
The technology is applicable to both large and small scale production systems (local farms, food processing companies) and can be introduced as a secondary unit within other bioenergy production systems, e.g., biogas where waste biomass from biofuel production is used as a feed in the anaerobic digesters. Thus, maximum use of raw materials and decrease in produced waste are ensured.