Carbon Neutral Biofuels

  What do we mean by Carbon Neutral? The CO2 produced in its combustion and fermentation will equal the CO2 used in its production. Ethanol is sometimes touted as a Carbon Neutral bio-fuel. Why? Well, to make the ethanol a plant photosynthesizes to produce sugar. 6CO2 + 6H2O → C6H12O6 + 6O2   Sugar is then fermented to produced ethanol. C6H12O6 → 2C2H5OH + 2CO2   When ethanol is combusted, the CO2 evolved equals the CO2 used in its production. 2C2H5OH + 6O2 → 4CO2 + 6H2O Simple? It does look that ...

Fuel from bugs

There are two key problems with using fossil fuels. They produce CO2 on combustion and they are non renewable. This posting aims to deal with the latter - the non renewable problem. Fossil fuels will run out someday soon so we really need to think about developing sustainable fuels. Ethanol, produced by fermentation of sugar cane has been heralded as a possible answer to the problem. We are probably all familiar with biofuels and Brazil seems to successfully use gasohol. However, ...