[Terrapreta] a braoder theory of torrefaction and TP

[Gerald Van Koeverden]

SKB's suggestion is already being engineered by huge waste management  
companies.  They are tapping into their landfill sites to draw off  
the methane to generate power.  They have realized they are sitting  
on a ton of cheap energy, and have another way of turning their  
garbage into dollars.

Gerrit

On 11-Dec-07, at 10:15 AM, Jim Joyner wrote:

> Sean, Duane,
>
> Suffice it to say, there's something worth looking at here. We are  
> not likely to find a panacea anyway. There are so many variables:  
> climate, soil types, economic needs and conditions, cultural  
> practices . . . obviously, there's room for many kinds of solutions.
>
> Jim
>
> Sean K. Barry wrote:
>>
>> Hi Duane, Jim,
>>
>> You've made a super good point here!  Methane-CH4 from buried wood  
>> would be an absolutely important issue.  A volume Methane gas-CH4  
>> has the same global warming potential as 25 times that volume of  
>> CO2 over a 100 year period and the same global warming potential  
>> as 72 time that volume of CO2 or 20 years.  As the buried wood  
>> decomposes it will release Methane.
>>
>> Here is maybe an interesting idea, though.  Suppose wood is buried  
>> and kept wet and warm under the subsoil.  Then, like a landfill,  
>> it is sealed from below and it is integrated with pipes from  
>> above.  This "wood-fill" could be then treated like a source of  
>> natural gas.  What would you think of that?  Of course, as you  
>> harvest the Methane, you would reduce the carbon storage and the  
>> ground would eventually subside.
>>
>> Regards,
>>
>> SKB
>> ----- Original Message -----
>> From: Duane Pendergast
>> To: 'Jim Joyner'
>> Cc: 'Terrapreta preta'
>> Sent: Monday, December 10, 2007 9:29 PM
>> Subject: Re: [Terrapreta] a braoder theory of torrefaction and TP
>>
>> Good thoughts there Jim, but it would likely perform similarly to   
>> a landfill. Those tend to generate methane which we are told is a  
>> much more effective greenhouse gas than carbon dioxide.  Charcoal  
>> might be a good substitute for some of the goals you mention and  
>> seemingly would avoid the methane production.
>>
>>
>> Duane
>>
>>
>
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