Iogen press releases say they've just finished a 100 tonne (per day I think) "pilot" plant in Canada. They must be fairly confident.
They say the cellulose enzyme process is econmic compared to the acid process developed by some US universities. Their planned feedstock is straw from the wheat praries, but it could be anything containing cellulose - waste timber, waste paper, etc. Dave --- In [EMAIL PROTECTED], Keith Addison <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] wrote: > > <snip> > > >As for ethanol look at www.iogen.ca. They have a commercial enzyme > >process that converts cellulose from timber straw and waste > >paper/card into ethanol. I have no idea if it's cheaper after excise > >tax than dino fuel, but it's certainly clean and renewable. > > Iogen and others, but I'd say it's not there yet - and it's been a > long time coming. Here's a rundown on it from Journey to Forever: > http://journeytoforever.org/ethanol_link.html > > Ethanol from cellulose > > "Wood-Ethanol Report: Technology Review", Environment Canada 1999 -- > good overview of the problem and the current solutions on offer. > http://www.pyr.ec.gc.ca/ep/wet/section16.html > > Fuel From Sawdust -- by Mike Brown (from Acres, USA, 19 June 1983): > Conversion of cellulose, such as sawdust, cornstalks, newspaper and > other substances, to alcohol -- "a fairly uncomplicated and > straightforward process". Biofuels Library. > http://journeytoforever.org/biofuel_library.html > > Arkenol Inc. is a pioneer in processing cellulose biomas into > ethanol: agricultural wastes, straw, leaves, grass clippings, sawdust > or old newspapers. The company uses proprietary concentrated acid > hydrolysis technology and is in the final development stages for a 48 > million litre per year biorefinery in Sacramento, California > processing rice straw. > http://www.arkenol.com > > The Iogen Corporation of Canada is "the leader in developing and > manufacturing ethanol-from-cellulose". The Iogen process is an > enzymatic hydrolysis process for converting lignocellulosics to > ethanol -- uses steam explosion pretreatment pioneered by the company > and Iogen's proprietary enzymes. > http://www.iogen.ca/fuels.htm > > BC International Corporation uses a genetically modified organism to > produce ethanol from biomass wastes such as agricultural residues, > municipal waste, and forest thinnings. Two-stage dilute acid > hydrolysis process for the preparation of the sugar streams and two > separate fermentations although both use the same organism. > http://www.bcintlcorp.com/ > > "Ethanol Production in Hawaii", a "pre-feasibility" study who a focus > on ethanol from cellulose. Includes comparison of the different > processes: simultaneous saccharification and fermentation; > concentrated acid hydrolysis, neutralization and fermentation; > ammonia disruption, hydrolysis and fermentation; steam disruption, > hydrolysis and fermentation; acid disruption and transgenic > microorganism fermentation; concentrated acid hydrolysis, acid > recycle and fermentation; and acidified acetone extraction, > hydrolysis and fermentation. > http://www.hawaii.gov/dbedt/ert/ethanol/ethano94.html > Good list of references: > http://www.hawaii.gov/dbedt/ert/ethanol/refs.html > > Also: > Genencore & DOE Move Closer to Fuel Ethanol from Biomass Cellulose - > See: Biomass Conversion with Enzymes: > http://www.newuses.org/EG/EG-23/23genetic.html > > > Keith Addison > > >With dino at current prices, the fuel excise tax system has to favour > >non-petroleum fuels. > > > >Dave Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html Biofuel at WebConX http://www.webconx.com/2000/biofuel/biofuel.htm To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
