Biofuels Generation Based on Technical Process and Biomass Quality

There is a wide variety of biomass types, implicating in biofuels and conversion process differences. Lignocellulosic biomass, for instance, can be converted into biofuels by biotechnology route. There are first-, second-, third-, and fourth-generation biofuels coming from different kinds of biomass and process. Besides biofuels, the carbohydrate and lignin of these biomasses can be used to generate other products of aggregated value. The biomasses have properties that resist the conversion processes, such as crystallinity and lignin contents. These difficulties are fought with genetic engineering and pretreatments to alter the material structure, decreasing the heterogeneity and recalcitrance, improving enzymatic hydrolysis and consequently the conversion into biofuels.