NewEnergyNews: BIOFUEL BREAKTHROUGH

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    Thursday, June 28, 2007

    BIOFUEL BREAKTHROUGH

    Will this improve efficiency enough to turn the EROEI positive?

    High energy liquid fuel created from sugar
    June 21, 2007 (UPI)

    WHO
    University of Wisconsin-Madison Professor James Dumesic and graduate students Yuriy Roman-Leshkov, Christopher Barrett and Zhen Liu
    the basic idea

    WHAT
    The scientists have derived a sugar from biomass and transformed it into DMF (2,5-dimethylfuran) a liquid fuel with 40% greater energy density than ethanol.

    WHEN
    Reported the week of June 21.

    WHERE
    Research at the University of Wisconsin-Madison.
    Reported in the journal Nature

    WHY
    DMF:
    - has a 40% higher energy density
    - is storage-stable
    - is not water soluble so is not diluted by atmospeheric humidity
    - requires only 1/3 the energy of ethanol for fermentation.
    - The research team also did important research on an intermediate step, turning sugar into hydroxymethylfurfural.
    graduate student Roman-Leshkov with a test tube of the fuel created from fructose

    QUOTES
    Dumesic: "Currently, ethanol is the only renewable liquid fuel produced on a large scale.. But ethanol ... has relatively low energy density, evaporates readily, and can become contaminated by absorption of water from the atmosphere. It also requires an energy-intensive distillation process to separate the fuel from water."

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