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Free Screening of the Documentary - "The Need to Grow" for 5 days only

 
master pollinator
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Didn't know where to post this.

Biochar and Algae  Biodigester Plant - AACT

Microfarm on an acre

First non gmo girl scout cookies due to a young girls' efforts

Lots of good people doing good things

https://grow.foodrevolution.org/screening/

Blessings .  . .
 
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Watched the film, a very interesting concept.   I didn't catch what was being used to feed the algae in the biodigester.  Does anyone know?
 
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I too found the film interesting. And... of course tried to reverse engineer the ideas.

I assume the wood chips / mass in the water provides the nitrates for the algae, and at one point they mention running co2 emission from an industrial source into the water for the necessary carbon.

I am also interested in the process of algal biochar and quick search of permies.com did not turn up any hits on "algal biochar" or "algae biochar".

Anyway, very interesting concept. The methane harvesting was kind of awesome.  
 
Sy Moen
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For those that missed the free screening, here is some of what it was about:

https://www.youtube.com/watch?v=DuGGBLuF7yY
https://www.youtube.com/user/algaeaqua/videos
https://www.youtube.com/channel/UCp0f4zP67Lw_mONU_sCs9CA

And, this talk is not directly related, but the science crossover is useful:

https://www.youtube.com/watch?v=iA4prxE8CVs


 
pollinator
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Location: Greybull WY north central WY zone 4 bordering on 3
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Sy Moen wrote:I too found the film interesting. And... of course tried to reverse engineer the ideas.

I assume the wood chips / mass in the water provides the nitrates for the algae, and at one point they mention running co2 emission from an industrial source into the water for the necessary carbon.

I am also interested in the process of algal biochar and quick search of permies.com did not turn up any hits on "algal biochar" or "algae biochar".

Anyway, very interesting concept. The methane harvesting was kind of awesome.  



If I understood it right the nitrates for the algae were coming from aquaponics.  The heat and the CO2 were coming off the burner burning biomatter.  Now it may be that all the biomatter was going into a methane digester and this would leave the out flow from that producing the nitrogen too along with nutrients for a huge green house. The burn was heating a pyrolisis unit to make biochar and in the process providing part of the fuel to run this part.  And you could leach the ash from the direct burn, burner for other micro nutrients if needed.
 
Sy Moen
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C. Letellier wrote:

If I understood it right the nitrates for the algae were coming from aquaponics.  The heat and the CO2 were coming off the burner burning biomatter.  Now it may be that all the biomatter was going into a methane digester and this would leave the out flow from that producing the nitrogen too along with nutrients for a huge green house. The burn was heating a pyrolisis unit to make biochar and in the process providing part of the fuel to run this part.  And you could leach the ash from the direct burn, burner for other micro nutrients if needed.



Hmmm. thanks for the input. I need to think some more...
 
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