here's one . The impossibility to use it worldwide? if we plant for it , there's no more space for food...
Nonsense - what a tired old non-argument that is. If you ask the wrong question you get the wrong answer. How much biofuels will it take... How much land will it take... For what? To substitute biofuels/renewables for the amount of fossil fuels used now? That's not an option - continuing the current rate/growth of energy use (ie energy waste) isn't an option either. A rational and sustainable energy future means great reductions in energy use, great improvements in energy efficiency, and, most important, decentralisation of energy supply to the local level, where all the ready-for-use alternatives can be used in combination as best fits the circumstances. Sustainable farms can produce enough energy as a by-product to provide their own energy needs and more, with the dedicated use of no land at all. Jeff Welter was discussing that yesterday, or aspects of it. It's often been discussed here.
http://archive.nnytech.net/sgroup/BIOFUELS-BIZ/1395/ How much fuel can we grow? http://archive.nnytech.net/sgroup/BIOFUELS-BIZ/1801/ Re: Biofuels hold key to future of British farming
> ... how much fossil-energy, in fuel, fertilizers and > pesticides, would be required to produce enough food to feed 900 > million people? > > Answer: none.
http://journeytoforever.org/biofuel_food.html Biofuels - Food or Fuel? On a related issue, or rather non-issue, see Is ethanol energy-efficient? http://journeytoforever.org/ethanol_energy.html Keith
From: "Appal Energy" <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] To: <[EMAIL PROTECTED]> Subject: Re: [Biofuel] Back to grid via WVO genset Date: Fri, 8 Oct 2004 23:29:29 -0500 Start Here: Vegetable oil has the potential to be 100% carbon neutral and is probably already ~90% carbon neutral despite fossil fuels used in its production, refining and transportation. Fossil fuel is 100% carbon negative right out of the chute and if you include mining, refining and transportation the negative numbers escalate well beyond that. No or almost no SOx, no heavy metals and a few dozen other benefits in comparison. If you want to labor on the math go ahead. But you're banging your head against the wall if you think that you'll come up with any disbenefit that comes anywhere close to the disbenefits of fossil fuels.
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