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Pyrolysis technologies have been around for a long time. Can the end
product compete with $2.50 per 1000 scfm of Natural gas or even $2.68 a
gallon gasoline? (these are the current commodity prices for each).



On Thu, Jun 14, 2012 at 4:20 PM, Sean Bell <[log in to unmask]> wrote:

> 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
>>
>