• Nitrogen: The key to biofuel energy balance [abstract] 

    Scharf, Peter C. (Peter Clifton), 1959-; Palm, Harlan Lee, 1943-; Kitchen, Newell R. (Newell Ray); Sudduth, Kenneth Alan (2009-04)
    Vigorous debate continues regarding the net energy that can be gained in producing liquid fuels from crop materials. However, it is clear that the net energy gain from the process is small relative to the energy demands ...