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    Philos Transact A Math Phys Eng Sci. 2008 Nov 13;366(1882):3901-18.

    Carbon neutral hydrocarbons.

    Zeman FS, Keith DW.

    Source

    Department of Earth and Environmental Engineering, Columbia University, 918 S. W. Mudd, 500 West 120th Street, New York, NY 10027, USA. fsz1@columbia.edu

    Abstract

    Reducing greenhouse gas emissions from the transportation sector may be the most difficult aspect of climate change mitigation. We suggest that carbon neutral hydrocarbons (CNHCs) offer an alternative pathway for deep emission cuts that complement the use of decarbonized energy carriers. Such fuels are synthesized from atmospheric carbon dioxide (CO2) and carbon neutral hydrogen. The result is a liquid fuel compatible with the existing transportation infrastructure and therefore capable of a gradual deployment with minimum supply disruption. Capturing the atmospheric CO2 can be accomplished using biomass or industrial methods referred to as air capture. The viability of biomass fuels is strongly dependent on the environmental impacts of biomass production. Strong constraints on land use may favour the use of air capture. We conclude that CNHCs may be a viable alternative to hydrogen or conventional biofuels and warrant a comparable level of research effort and support.

    PMID:
    18757281
    [PubMed - indexed for MEDLINE]
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