Researchers in Belgium have looked at the energy that can be released from grass and maize by anerobic digestion (that’s letting things rot down, to you and me). According to the research published in Environmental Research Web, energetically this way looks favourable.
It is interesting to see research in this area. In terms of biofuels there is a fixation on producing liquid fuels, and there is very little thought apparently given to processes that do not involve fermentation with yeast, or growing crops to extract oil.
Hattip to biofuel cities e-newsletter