Biofuel production methane

The increasing energy demands have directed the attention to renewable resources for the fabrication of biofuels. The exploitation of feedstocks containing polysaccharides other than cellulose is of interest for biofuel production. The aspects of the production of biofuels, including biodiesel, bioethanol, methane, and hydrogen are subject of a detailed monograph (1)... 

Chandra, R., Takeuchi, H., Hasegawa, T., 2012. Methane production from lignocellulosic agricultural crop wastes a review in context to second generation of biofuel production. Renewable and Sustainable Energy Reviews 16 (3), 1462-1476. 

Adapted from (Haiduc, A., et al., 2009. SunCHem an integrated process for the hydrothermal production of methane from microalgae and CO2 mitigation. Journal of Applied Phycology 21(5), 529—541 Stucki, S., et al., 2009. Catalytic gasification of algae in supercritical water for biofuel production and carbon capture. Energy Environmental Science 2(5), 535—541). 

U.S. capacity for producing biofuels manufactured by biological or thermal conversion of biomass must be dramatically increased to approach the potential contributions based on biomass availabiUty. For example, an incremental EJ per year of methane requires about 210 times the biological methane production capacity that now exists, and an incremental EJ per year of fuel ethanol requires about 14 times existing ethanol fermentation plant capacity. 

Just as the fossil fuel and petrochemicals industries are closely connected, the production of the same but bio-based chemicals will be closely related to the manufacturing of biofuels. The focus of commercialization by using biomass as a feedstock is mainly on ethanol, biodiesel, butanol, hydrogen, Fischer-Tropsch fuels, methanol, methane, and MTBEyETBE (methyl- or ethyl-tert-butylether). These products can be used either as biofuels or chemicals for further converting. In the context of this chapter, only routes for the ethylene and propylene... 

The development of PH A into a branch of bulk chemical industry will address at least three issues shortage of petroleum for plastic materials, reduction of CO emissions, and environmental protection. It is related to the sustainable development of the chemical and material industries. The newly developed PHA-based biofuels open up a new area for development that avoids argument on food versus fuel and fuel versus land. However, much more work needs to be done to reduce the cost of PHA production so that PHA-based biofuel can be added to the existing bio-based fuels, including ethanol, propanol, butanol, biodiesel, hydrogen, and methane gas (Fig. 7). 

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