[Digestion] Violation of First Law - Cease or desist now

Tue Oct 30 22:38:22 EDT 2007

It has come to my attention that it is claimed that algae can produce "56,000 
gallons of biodiesel and other fuels per day per acre".  If it is to be 
assumed that the production uses photosynthesis and sunlight this would be a very 
serious violation of the First Law of Thermodynamics. Please cease and desist.  

Of course, it could be that they used many additional acres of land to 
capture sunlight, converting it to electricity, and using the electricity to light 
energy (e.g. with photodiodes) and then illuminating t heir algae 
photobioreactors.   Or if some other source of external energy is put into the system.  
Such as sugars or other organic materials, and the algae are grown in the dark.   
 If that is the case please state so or cease and desist from further 
violations of  the First Law..   

Cheers, 

John   . 

In a message dated 10/30/2007 12:25:47 PM Pacific Daylight Time, 
KatahdinEnergyWorks at verizon.net writes:

> Subj:Re: [Digestion] Fw: Food-waste anaerobic digester at University of 
> Colorado 
> Date:10/30/2007 12:25:47 PM Pacific Daylight Time
> From:KatahdinEnergyWorks at verizon.net
> Reply-to:fjheller at verizon.net
> To:phoenix98604 at msn.com, hseaver at gmail.com, digestion at listserv.repp.org
> Sent from the Internet 
> 
> 
> 
> Not me but a colleague, has investigated this, and not knowing the strain of
> Algae you are using; but he said this is a very labor intensive process best
> done in a hot weather country, and compared it to raising Spirolina where
> there is a lot of experience. 
> 
> Without a 95 degree lagoon, and lots of cheap labor, growing and harvesting
> the algae and expressing the bio-oil is a very expensive process.
> 
> How much algea must be pressed to make 1 gallon of bio oil....a lot.
> 
> I like doing a double extraction, that changes the yield.
> 
> Everybody wants an easy answer, to producing bio-oil....not sure there are
> any yet.
> 
> Frank J. Heller, MPA
> KATAHDIN ENERGY WORKS
> 12 Belmont St.
> Brunswick, ME 04011-3004
> 207.729.6090
> http://mysite.verizon.net/fjheller/
> 
> 
> -----Original Message-----
> From: digestion-bounces at listserv.repp.org
> [mailto:digestion-bounces at listserv.repp.org] On Behalf Of Art Krenzel
> Sent: Tuesday, October 30, 2007 3:30 PM
> To: Harmon Seaver; digestion at listserv.repp.org
> Subject: [Digestion] Fw: Food-waste anaerobic digester atUniversityof
> Colorado
> 
> To all:
> 
> I need to send a correction message regarding the production rate of algae 
> to biodiesel.  I gave only the short version.
> 
> They ran their test program for 19 days and averaged a biomass production 
> rate capable of producing about 13,100 gallons per day per acre over the 
> total period.  During that time, for periods of time there were production 
> peaks of up to 23,200 gallons per day per acre of biodiesel based on the 
> biomass production rate.  It is my prediction that when optimized with an 
> improved algae species, superior extraction system, additional process 
> changes and using auxiliary fuel producing systems, this system can produce 
> up to 56,000 gallons of biodiesel and other fuels per day per acre.
> 
> Art Krenzel
> 
> 
> ----- Original Message ----- 
> From: "Art Krenzel" <phoenix98604 at msn.com>
> To: "Harmon Seaver" <hseaver at gmail.com>; <digestion at listserv.repp.org>
> Sent: Tuesday, October 30, 2007 8:00 AM
> Subject: Re: [Digestion] Food-waste anaerobic digester atUniversityof 
> Colorado
> 
> 
> > Harmon,
> >
> > Excellent answer to the food waste problem!
> >
> > In the world that I am working on, all people moving vehicles are electric
> > or biodiesel.  The electric power is generated from solar energy stored in
> > the form of tree biomass and algae.  The CO2 produced by the electric
> > generation is recovered to produce more algae.  Biodiesel is extracted 
> > from
> > the algae and the solid residues are fermented to alcohol or digested via
> > anaerobic digestion to methane.  Biodiesel, methane and alcohol provide
> > vehicle fuel which removes CO2 from the recycling system.  The system
> > generates mobile fuel energy by collecting and recycling CO2 in a closed
> > short cycle loop using algae and sunlight.
> >
> > Recently (in the last two months), an algae biodiesel system demonstrated 
> > a
> > production rate of 56,000 gallons of biodiesel per acre per year for a 
> > trial
> > run of 9 days.  I think this can be the real answer to the production of
> > home grown fuels, not corn.
> >
> > Art
> >
> >
> > ----- Original Message ----- 
> > From: "Harmon Seaver" <hseaver at gmail.com>
> > To: <digestion at listserv.repp.org>
> > Sent: Saturday, October 27, 2007 11:24 AM
> > Subject: Re: [Digestion] Food-waste anaerobic digester at Universityof
> > Colorado
> >
> >
> >>   Wouldn't the best use of food waste be to feed it to pigs -- then
> >> harvest the meat and use the pig manure for fertilizer or else AD it?
> >>
> >>
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> >>
> >
> >
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> 
> 
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