[Gasification] Cellulosic Ethanol a dead end

[Mark Ludlow]

The issue is not the enzymes; it's reducing the physical dimensions of the
substrate so that the enzymes--added neat, or expressed by the various
microbes--have sufficient sites to cleave the linear polymer cellulose into
glucose units that can be digested by microbes that produce such things as
methane, CO2, acetic acid or methanol as byproducts. Goats and cows spend
lots of time chewing, after all.

Mark

-----Original Message-----
From: gasification-bounces at listserv.repp.org
[mailto:gasification-bounces at listserv.repp.org] On Behalf Of Paul Francesco
Sent: Tuesday, November 13, 2007 3:19 AM
To: fjheller at verizon.net; Discussion of biomass pyrolysis and gasification
Subject: Re: [Gasification] Cellulosic Ethanol a dead end

Anyone ever try Goat stomach Enzymes, as browsers they seem to be a 
logical choice, they are also proficient debarkers and wood lot clearers.

Katahdin Energy Works wrote:

>Seeding wood piles with fungi does the job naturally; you forgot to ask
>Mother Nature about that stuff growing on the wood pile didn't you?
>
>Dr.? FOODY observed this during WWII, isolated the enzymes, patented them
>and his heirs sell them; you can do it with the same strains of
>fungi...damned if I know how to do it economically or practically, but I
>have a friend who's trying. 
>
>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: gasification-bounces at listserv.repp.org
>[mailto:gasification-bounces at listserv.repp.org] On Behalf Of Thomas Reed
>Sent: Monday, November 12, 2007 11:49 AM
>To: Discussion of biomass pyrolysis and gasification;
>STOVES at LISTSERV.REPP.ORG; Bob Weldon; Scott Weldon; GASIFICATION; bio >>
>"BIOENERGY at LISTSERV.REPP.ORG"
>Subject: [Gasification] Cellulosic Ethanol a dead end
>
>Dear All:
>
>If you think converting the 70% starch in corn into sugar and then into 
>ethanol is inefficient, (MAYBE 35% more energy out than in) just try 
>stripping the lignin out of cellulosic materials as a hurdle.  Dozens of 
>companies (since the first in 1918) have claimed to have the process 
>"now commercial", sold stock, then quietly tiptoed away.  Mother Nature 
>designed starch to be converted to sugar.  She designed cellulose NOT to 
>be converted into sugar.  Given enough subsidies it can be commercial 
>today, but so could many other processes with higher payback. 
>
>TOM REED        BEF
>
>
>
>
>
>
>
>Benjamin Domingo Bof wrote:
>  
>
>>Friends, two years ago when we go to Simposium in São Paulo, Brazil;
>>    
>>
>defending ethanol from sugar cane we write an matter presented to IAPA
>(Inter American Press Assn) "Energia limpia o un futuro incierto" defending
>bagasse as raw material for cellulosic ethanol. Now we propose in Bella
>Vista, Corrientes province in Argentine to Major Mario Haberle use poplar
>and willows to produce cell ethanol. More than fifty years in these county
>was operated and wood ethanol pant ia a place named "Destino". 
>  
>
>>Regards; Benjamin
>>
>>Don <daschade at telus.net> escribió: FOLKS,
>> 
>>  I CAN ACROSS THIS ARTICLE ON THE INTERNET AND WANTED TO SHARE IT.
>>   IT SEEMS LIKE USING "TREES" WILL REDUCE THE PRESSURE ON FOOD SUPPLIES 
>>FROM USING CORN
>>    AND OTHER GRAINS.  YOU COMMENTS ON THIS NEW PROCESS ARE INVITED.  IT 
>>IS NOT CLEAR TO ME
>>    IF THEY ARE GASIFYING OR USING A SLURRY AS WITH CORN TO ETHANOL?  
>>THANKS!
>>
>>    DON  
>>  
>>    
>>
>>>The New New Fuel
>>>    
>>>      
>>>
>>   Khosla Ventures-backed Range Fuels to turn wood chips into ethanol.
>>  
>>    
>>
>>>By Kerry A. Dolan
>>>
>>>
>>>      
>>>
>http://www.forbes.com/2007/11/03/energy-khosla-fuels-tech-cz_kd_1105fuels.h
t
>ml?partner=email
>  
>
>>>Related Links:
>>>Biofuels Bridge Conoco and ADM
>>>
>>>      
>>>
>http://www.forbes.com/markets/2007/09/27/conoco-phillips-closer-markets-equ
i
>ty-cx_cg_0927markets39.html?partner=email
>  
>
>>>Paul Maidment on Energy 2017
>>>
>>>      
>>>
>http://www.forbes.com/technology/2007/10/13/paul-maidment-2017-tech-future0
7
>.html?partner=email
>  
>
>>>Amber Waves Of Green
>>>
>>>      
>>>
>http://www.forbes.com/investingideas/2007/07/26/ethanol-biomass-corn-pf-ii-
i
>n_mm_0726energyintelligence_inl.html?partner=email
>  
>
>>>
>>>  
>>>    
>>>      
>>>
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>>
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>>  
>>    
>>
>
>  
>
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