[Terrapreta] range fuels

[Kevin Chisholm]

Dear Kelpie

Kelpie Wilson wrote:
> Have folks seen this one?
> Anyone know what this "thermal conversion process" is?
I suspect that it might be the process they employ to "open up the woody 
biomass" so that the enzymatic hydrolysis process can proceed. 
Basically, woody fibres are encased in lignin, which prevents enzyme 
access to the cellulose. If the lignin coating is "opened", then the 
enzymes can convert the cellulose to a fermentable form of sugar.

Best wishes,

Kevin


>
> Range Says Will Make Wood Cellulosic Fuel in 2008
> US: November 8, 2007
>  
> NEW YORK - Private US company Range Fuels broke ground on Tuesday on a 
> biorefinery that will be the first plant to make commercial levels of 
> cellulosic ethanol starting next year, its CEO said.
>  
> Range Fuels is one of six companies that will receive a total of about 
> US$385 million in grants from the US Department of Energy for making 
> cellulosic fuel.
> The biorefinery is being built in Georgia, home to large swaths of 
> private forest land. It will initially make 20 million gallons per 
> year of ethanol from sawdust, pine trees and wood bits left over from 
> cutting down lumber. It is slated to eventually grow to 100 million 
> gpy of production.
>
> Mitch Manditch, the CEO of Range Fuels, said ideally the plant would 
> use mostly wood waste as a feedstock.
>
> "That's our preference, just to keep costs down, because no one else 
> wants that wood," he said in a telephone interview.
>
> Making cellulosic ethanol currently costs about twice as much as US 
> traditional ethanol made mostly from corn. But industry experts 
> estimate that costs will fall enough to let cellulosic become a 
> commercial fuel in several years, one that will emit less greenhouse 
> gases and won't use up prime farm land like corn-based ethanol does.
>
>
> ETHANOL GLUT
>
> US ethanol refining capacity has shot up 30 percent since Jan 1. to 7 
> billion gpy as the Bush administration offers companies incentives to 
> make a domestic source of fuel. Record oil prices near US$100 a barrel 
> and concerns about greenhouse gases have also fueled a rise to 
> cellulosic ethanol.
>
> But the boom has helped lead to low ethanol prices and high corn 
> prices that have crushed margins for making the fuel. Since wood waste 
> is far cheaper as a feedstock, Range hopes the plant would eventually 
> be more profitable than corn biorefineries.
>
> Cellulosic ethanol is made from breaking down the woody bits of 
> plants. A whole new range of crops that grow on marginal lands, such 
> as switchgrass, can be used.
>
> When the final Range plant is completed, it will cost several hundred 
> million dollars, Manditch said. The plant will receive up to US$76 
> million from the DOE.
>
> Range is funded in part by venture capitalists including Vinod Khosla, 
> a top Silicon Valley investor who is also helping to fund US biofuels 
> company Cilion and other alternative energy companies.
>
> Manditch said Range will use a thermal conversion process to make the 
> fuel, unlike most other companies that are planning to make it with 
> enzymes to break down the tough feedstocks. He said Range Fuel ethanol 
> will emit about 75 to 80 percent less greenhouse gas than ethanol made 
> from corn. Part of the emissions are saved because the plant will not 
> ferment the feedstock, a process used in corn ethanol, he said.
>
> The thermal process can also break down other feedstocks, such as 
> switchgrass, Manditch said.
>
> (Reporting by Timothy Gardner, Editing by Marguerita Choy)
>
>  
>
> Story by Timothy Gardner 
>  
>
> Kelpie Wilson
> PO Box 1444
> Cave Junction, OR 97523
>
> home office phone: 541-592-3083
> cell (used only when traveling) 213-925-1517
>
> /For an archive of my writing and reviews of my novel Primal Tears, 
> visit www.kelpiewilson.com
>
> <http://www.kelpiewilson.com/>/
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Terrapreta mailing list
> Terrapreta at bioenergylists.org
> http://tech.groups.yahoo.com/group/biochar/
> http://terrapreta.bioenergylists.org
> http://info.bioenergylists.org