37 comments on Biofuel progress, a report from Dubuque
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37 comments on Biofuel progress, a report from Dubuque
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The forest harvesting paper did mention that there is a liquid and gaseous product to the portable charcoal kiln, but gave no more details, and I don't know what they are, or what volume is produced. The problem with large scale burning of weeds is, as the switchgrass example noted, EPA wants an impact statement for the burning of each variety that will go into the furnace.
The liquid and gaseous products from the charcoal kiln are probably somewhere between the properties of bio-oil (a product of fast thermolysis at intermediate temperature) and the off-gas from torrefaction, with some tars thrown in. The process is going to turn carbohydrate into a product which is primarily carbon, so the byproducts will be rather wet.