[Gasification] Any "help" appreciated --- Peter/Belize

[Peter Singfield]

Dear Art;

That is a simply an amazing concept -- and I will have to find the time to
delve into it appropriately.

>This is not perpetual motion but it is an interesting symbiotic reaction.

Maybe not -- but it certainly is the better solar cell!!

The product gas from the fast digester needs simply be bubbled through the
algae tanks to pass over the CO2 into that water -- while the much purer
methane comes out the top -- 

Wonder if a fast algae tank -- transparent to sunlight -- would be feasible??

But then -- the algae is producing O2 from the CO2 -- still -- the water
alone could be circulated through a device to absorb the CO2 while cleaning
the product gas.

Thus the algae "pond" could be open to atmosphere.

The variations possibly in such a symbiotic biological solar cell are quite
endless.

Peter

At 10:50 PM 3/18/2007 -0700, Art Krenzel wrote:
>Peter,
>
>I like your focus on anaerobic digestion (AD) because it works in all sizes, 
>a wide range of feedstocks and scales of production.
>
>BUT, here is a more symbiotic idea.  Algae can produce between 5000 and 
>20000 gallons of bio-oil per acre when optimized.  The algae are between 
>30 - 50% lipid oils by weight and the rest of the body is starch.  They live 
>on CO2, nutrients from dirty water and use sunlight for photosynthesis to 
>produce the plant matter.  Details of the system can be located at 
>http://www.oilgae.com/
>
>Here is the great combination.  An AD produces on the order of 35 - 40% CO2 
>and 60 - 65% methane.  The CO2 is easily removed from the gas and could be 
>recycled back to the algae bioreactors as feedstock for the photosynthesis. 
>The crude purified methane could be used as compressed gas for mobile fuel.
>
>The oil is removed from the algae via several solvent or centrifugal systems 
>already made.  The oil goes to bio-oil collection and the starch goes back 
>to the AD system to produce more methane and CO2.
>
>The only thing missing is sunlight and direct sunlight has 10 times the 
>energy per unit area necessary for the photosynthesis.
>
>This is not perpetual motion but it is an interesting symbiotic reaction. 
>It works in small scale as well but suffers from economy of scale issues as 
>do most energy processes
>
>Good luck with that one!
>
>Art Krenzel
>
>
>
>----- Original Message ----- 
>From: "Peter Singfield" <snkm at btl.net>
>To: <gasification at listserv.repp.org>
>Sent: Sunday, March 18, 2007 6:18 PM
>Subject: Re: [Gasification] Any "help" appreciated --- Peter/Belize
>
>
>> At 02:22 PM 3/18/2007 -0600, you wrote:
>>>
>>>Gosh, this does sound good to me.  I'm looking for a way to use
>>>biomass for a small co-generation setup, and if I can use bugs to
>>>gasify my grass, I'm good to go.   For a small, stationary engine a
>>>steady flow of methane, enough to heat a standard house,  woud be
>>>just fine.  How big of a  tank, etc, would it take?  Can this combine
>>>with a bit of ethanol production for the vehicle?
>>>
>>>Best,
>>>Bob Stuart
>>
>> According to AD the food fed fast bio methane digesters work 400 times or
>> more faster than conventions sewage based digesters. So that equals a 4oo
>> times reduction in size.
>>
>> One of the problems for folks to the north is keeping the digester hot
>> enough -- 80 F or more i believe.
>>
>> Also -- this is covered on another list -- 
>>
>> BIOENERGY at LISTSERV.REPP.ORG
>>
>> Should be all kinds of people able to fill in the blank spaces there.
>>
>> The topic was originally started by AD Karve on the Stoves list a few 
>> years
>> back:
>>
>> stoves at listserv.repp.org
>>
>> I believe AD still contributes on that list now.
>>
>> Peter/Belize
>>
>> _______________________________________________
>> Gasification mailing list
>> Gasification at listserv.repp.org
>> http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org
>> http://gasifiers.bioenergylists.org
>> 
>
>