A unique, integrated non-obvious pathway to convert biomass to biofuels using integration of chemical processes is described herein. The present invention is simple, direct, and provides for the shortest or minimum path between biomass and transportation fuels with alcohols as intermediates, while avoiding hydrogen use during processing. Furthermore, the present invention allows the manufacture of drop-in substitutable fuels to be used as-is without modifications instead of conventional petroleum based fuels. The processing described herein is done under mild conditions, under relatively low pressures and temperatures, and under non-corrosive conditions obviating use of special equipment or materials. The novel integration heat and mass generated during the process increases overall process efficiency and lowers financial costs for processing and capital equipment, manages environmental impact, and enables a relatively high degree of yield by an enhanced usage of fresh water and thermal energy in comparison to the amount of biomass processed.
