Abstract

Abstract Biofuel production using carbohydrate rich brown seaweed is being intensely researched in the last few years as a viable replacement for 1st and 2nd generation biomass. Process design and simulation is generally used when evaluating technological and market capabilities of large scale, novel, fuel production processes. This study, for the first time, presents process design solution for a biorefinery, an integrated anaerobic digestion, and PHP (Pyrolysis, Heat and Power) process. The process utilizes 3rd generation biomass (marine macroalgae) and yields wide range of products: mixed alcohols, ethanol, biodiesel equivalent, biogas, and electricity. Technoeconomical assessment of the biorefinery is performed and compared to single conversion pathways (biochemical and thermochemical). It is highly expected that the synergistic effect of this integrated process should yield a more economically and environmentally viable biofuel production, compared to stand-alone pathways.

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