[Terrapreta] 20 million artificial trees to scrub CO2

[Duane Pendergast]

Right Peter!

 

            Here is another variation on the artificial tree idea. 

 

 
http://www.chicagotribune.com/features/lifestyle/green/la-sci-carbon29apr29,
0,5297331,full.story

 

Note the estimated cost is $200/tonne of CO2 which is about $700/tonne of
char.

 

Duane

 

 

 

-----Original Message-----
From: terrapreta-bounces at bioenergylists.org
[mailto:terrapreta-bounces at bioenergylists.org] On Behalf Of Peter Read
Sent: June 1, 2008 2:24 PM
To: Laurens Rademakers
Cc: terrapreta at bioenergylists.org
Subject: Re: [Terrapreta] 20 million artificial trees to scrub CO2

 

Why not just grow ordinary trees ?

'civilization' has destroyed 2 b Ha of forest

why not restore half of that,. operate it commercially, build wooden houses
with the timber, and pyrolyse the trash for soil improvement and bio-oil ?

1 b Ha in warm climate absorbs ~10Gt (billion tons) p.a.

there's plenty of land (esp as trees don't need arable quality land)

the shortage is not of land but of investment in land

Peter

----- Original Message ----- 

From: Laurens <mailto:lrademakers at biopact.com>  Rademakers 

To: terra Preta <mailto:terrapreta at bioenergylists.org>  

Sent: Monday, June 02, 2008 7:36 AM

Subject: [Terrapreta] 20 million artificial trees to scrub CO2

 

Here, an idea that directly competes with terra preta; the artificial tree
idea.

 

I find this a stupid idea, because it doesn't offer any benefits besides
capturing CO2. What's more, you would capture the CO2 and geosequester it,
which is an untested method.

 

It's also hugely expensive ($600 billion).

 

So why does this fella make the BBC headlines, and why not Lehmann or
Steiner?

 

http://news.bbc.co.uk/2/hi/uk_news/wales/7429562.stm

 


 


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