biomass, Biofuel, Alcohols, Biobutanol from Diatom or Algae (Solalgal Fuel)
Butanol can be used in gasoline engines without engine modification. Like ethanol it is formed via fermentation processes but uses a specialized bacteria, clostridium acetobutylicum, instead of yeast. Diatoms or algae can be used as the raw organic material for butanol production which can be powered by 100% solar energy.