Quote:
Originally Posted by wodin
You don't seem to understand, if you burn the same amount of hydrocarbon you release the same amount of CO2, it doesn't matter where or when the hydrocarbons came from. If you burn a liter of vegetable oil you get a certain number of gramms of CO2, if you burn a liter of diesel fuel you get approximately the same amount of CO2. You've gained exactly nothing from it being vegetable oil.
And by the way, do you know what the wast product of ethanol fermentation is? Yup, you guessed it, CO2!
It's a zero sum equation!
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The zero sum equation is correct in some ways; in that what was extracted from the atmosphere in the very recent past is being released back. Hence biomass stations that use, for instance wood - are really only releasing what was there when those trees were growing. In climatological/geological time- scales this was yesterday.
The difference with oil, gas and coal is that the Co2 locked up in these reservoirs are from millions of years ago.