----- Original Message -----
From: <[EMAIL PROTECTED]>
Newsgroups: gmane.science.general.global-change
To: "globalchange" <[email protected]>
Sent: Monday, February 19, 2007 2:16 PM
Subject: [Global Change: 1316] Re: new IPCC assessment
>
>> Can I just chip in with the observation that CO2 removal might be
>> accomplished rather more economically by using biological plants than
>> nuclear ones?
>
> It's certainly an option for capturing carbon humanity has been
> familiar with for a rather long time, and it's also where I make my
> money. My area of research is fast pyrolysis of biomass.
>
> I think carbon capture is extremely well established and proven
> technology when considering the biological routes.
>
I question that the scheme described by Gareth would be more economical.
Every step involves spending with no direct economic return on investment.
Engineering a new plant (spend), planting the plants (spend), harvesting the
plants (spend), and dumping them in the ocean (spend).
Contrast that with the nuclear economy: build a plant (spend), sell
electricity (income). In a profit-motivated economy, the nuclear option
would seem rather more "economical" to me.
Of course, if the new carbon sequestering supertrees were converted to fuel
for combustion rather than ocean dumping, there would be a potentialy
profitable enterprise, but of course, this would amount simply to co2
emission avoidance with no net reduction.
So, the nuclear carbon sequestration machine does appear to be the more
economical way to remove co2 from the atmosphere.
-dl
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