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Dr. Alex Green's pyrolysis machines can convert any (dried)  biomass into
methane like fuel gasses.

You can see some of his devices t http://greenliquidandgas.com

Sean
On Jun 14, 2012 10:08 AM, "Brian Becker" <[log in to unmask]> wrote:

> Candice,
>  I applauded any creative solution to addressing the spread of cogongrass.
>  Dr. Rockwood, UF emeritus, worked for a number of years on controlling
> cogongrass in phosphate minelands by using fast-growing trees to shade out
> cogongrass and serve as a nurse crop for other species.  Several years ago
> we collected some samples for Dr. Alex Green, UF emeritus, to test for
> pyrolysis at his lab in the Energy Park.  They both may be able to supply
> you with additional information.  The use of invasive species for biofuels
> is indeed very attractive.  One thing I would add for including in your
> project is that cogongrass is listed on Florida's Noxious Weed List which
> restricts movement of the plant.  Last I heard cogongrass in Florida was
> still listed as sterile, propagating via rhizomes only, though it is a
> prodigious seed producer (if I recall correctly it was originally
> introduced to the US as packing material, at least raising the question in
> my mind of the possibility of viable see!
>  d production).  Any use of the above-ground biomass as a feedstock would
> have to take these into consideration - barring a change in legislations,
> the design of your system would most likely have to be mobile to enable
> taking the unit to where the cogongrass is, and include the energy required
> for preprocessing and transportation.  Alternatively, areas of extensive
> infestation such as the minelands in Central Florida might support a
> permanent conversion facility if movement within the area of infestation
> was permitted and that was deemed to be the most appropriate use of the
> land.  Good luck with the project!
>
> Brian
>
> -----Original Message-----
> From: Bioenergy and Sustainable Technology Society [mailto:
> [log in to unmask]] On Behalf Of Prince,Candice M
> Sent: Tuesday, June 12, 2012 8:12 PM
> To: [log in to unmask]
> Subject: Question on Cogongrass
>
> Hello BEST,
>
> My name is Candice Prince, and I am an intern with Dr. Wilkie's BioEnergy
> Summer School. I am very interested in using cogongrass to make biofuel,
> particularly via anaerobic digestion. It is one of the top ten worst weeds
> in the world, and poses a huge problem in the southeastern United States.
> It produces a lot of biomass, and my thought is that it might be beneficial
> to remove it from the natural areas it invades and anaerobically digest it
> to make biogas. I have managed to find one article (here:
>
> http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_3_2744_Lin_Lee_Simult_Sacch_Fermet_Grass_Bioethanol_1570.pdf
> )
> showing cogongrass has potential as a feedstock for bioethanol, but have
> been unable to find any other sources in the literature. I was wondering if
> the BEST community might have any thoughts on using cogongrass to produce
> biofuel, or know of any research being done?
>
> Thank you for your time,
> Candice Prince
>