HOW TO MAKE CLEAN ENERGY FROM TOUGH PLANT WASTE



    Step 1 – Collection
    “Cellulosic biomass” comes from a variety of plant materials: crop residue such as corn husks; sawdust and other wood waste; and even switchgrass and other weed-like plants.


    Step 2 – Extraction
    Sugar forms the raw materials of biodiesel, but extracting it is tricky. One way to do so: Steam the biomass at a high temperature, then expose it to acids.


    Step 3 – Conversion
    Turning those sugars into biodiesel requires a catalyst. E. coli, a harmless, naturally occurring bacteria, has been specially bred to convert the sugars into tank-ready biodiesel.

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