Originally posted by twhitehead
I thought it was an american thing, but now I am not so sure. Do you have any stats as to where biofuels in Europe come from? I agree that they are wrong to talk as if crops are the only type of biofuel, but it would still be interesting to know how big a proportion they are currently.
I don't have any stats on that but I once saw a documentary about waste frying oil from restaurants, which would have otherwise have to been dumped as environmentally hazardous waste, being reprocessed into biofuel that then went straight into people's cars and I was very impressed by that.
Another thing I know is that, currently, the biggest barrier into converting most types of organic waste is finding a cost effective way of breaking down cellulose into sugars and then converting those sugars into biofuel. But there is a huge amount of ongoing research on that and, when they finally and inevitably crack that problem, just about any organic waste could then be used to economically make biofuels including waste wood,waste paper, lawnmower grass cuttings, garden weeds, waste food, crop debris, and just possibly even sewage!
And what will be left over would be fertilizer which would at least partly replace the current chemical fertilizers which currently tend to have a high carbon footprint -so it would be excellent for the environment all round.
When that happens, I wonder if enough biofuel could be made for all our current cars? Don't know how to estimate that.