Straw Converted to Gasohol in Canada 74
An anonymous reader writes "The Government of Canada announced that its vehicle fleet is the first in the world to use cellulose-based ethanol. Iogen Corporation produces the ethanol from wheat straw at its leading-edge demonstration facility in Ottawa."
duh. (Score:4, Informative)
The whole system is only economical when we subsidize sugarcane farmers though
Re:duh. (Score:3, Informative)
Uh, no.
Brazil uses standard fermentation from *sucrose* not *cellulose*. That's why you need sugarcane - to get the sugar. If you are just using cellulose, you can use anything with cellulose: straw, cornstalks, paper pulp, old cotton clothes, grass clippings, etc.
Re:You take oil, use it to make fertiliser, spread (Score:1, Informative)
Except that for the ethanol you only take out the carbon portion of the straw - the stuff that doesn't stick around when it rots anyway. You don't fertilize with carbon, you use (fixed) nitrogen, phosphorus, potassium, iron and other micronutrients (basically salts). "Using oil to make fertilizer" means burning the oil for fuel to process rocks to get fertilizer.
What's left behind after the ethanol is extracted is a sludge which probably works nicely as a fertilizer, as it is rich in all the stuff which plants are made of.
The process (Score:2, Informative)
"EcoEthanol(TM) is the patented name of Iogen's cellulose ethanol process. The process uses an enzyme hydrolysis to convert the cellulose in agriculture residues into sugars. These sugars are fermented and distilled into ethanol fuel using conventional ethanol distillation technology."
Cellulose ethanol differs from conventional ethanol in the following ways:
a) the manufacturing process does not consume fossil fuels, but rather uses plant byproducts to create the energy to run the process (this leads to a net zero greenhouse gas emissions profile),
b) the technology is new and emerging and has only recently become practical, and
c) the raw material does not compete as a food source for humans and is available today based upon existing farm practices.
*How much ethanol do you get from a tonne of feedstock?
Exact output depends on the condition of the feedstock that is put into the process, however approximately 300 litres of ethanol are produced from one tonne of feedstock. There is also approximately 200kg of lignin left after hydrolysis. The lignin can be burned to generate power.
Re:Cost to convert? (Score:2, Informative)
Re:Northern neighbors (Score:4, Informative)
Thanks for the link, though. I find it interesting that MTBE (methyl tertiary-butyl ether), which is used during the winter to reduce air pollution, in turn increases groundwater pollution. Where I live our only source of water is groundwater, so the local governments are SUPER DUPER anal about pollution control like septic/chemical waste systems and fuel storage... but the pumps say that the fuel is oxygenated with an ether from November to February. I wonder if it's the same stuff...
=Smidge=
Re:Innovation will have to come from outside the U (Score:3, Informative)
The synthetic fuel goals in northern Alberta keep getting funded by the billions for some reason (I'm currently working on a side project - nothing impressive to the average Slashdot reader). The cost of extraction is high, but the available resources are quite impressive.
Anyone want to take a shot as to why why all this money is being spent on crappy oil?
If you guessed self-sustainability for North America you're probably right. All the while we learn more about clean production, co-gen, etc.
If middle east oil dried-up tomorrow, we'd be able to supply the continent for quite a few decades, albeit at somewhat higher prices.