Sucrose accounts for little more than 30% of the chemical energy stored in the mature plant; 35% is in the leaves and stem tips, which are left in the fields during harvest, and 35% are in the fibrous material (bagasse) left over from pressing.
Part of the bagasse is currently burned at the mill to provide [...]
Most automobiles in Brazil run either on alcohol (E100) or on gasohol (E25) since the government made mandatory the use of 24% ethanol in the blend sold in the entire country.
Since 2003, dual-fuel (”Flex-Fuel”) or full flex-fuel vehicles that run on any proportion of ethanol and gasoline have been gaining popularity, reaching 5 million new [...]
Brazil’s sugar cane-based industry is far more efficient than the U.S. corn-based industry.
Sugar cane ethanol has an energy balance 7 times greater than ethanol produced from corn. Brazilian distillers are able to produce ethanol for 22 cents per liter, compared with the 30 cents per liter for corn-based ethanol. Sugarcane cultivation requires a tropical or [...]
Producing biomass results in the fixing of atmospheric carbon dioxide into organic carbon.
Converting this biomass to a useable fermentation feedstock (typically some form of sugar) can be achieved using a variety of different process technologies. These processes for fermentation feedstock production constitute the critical differences among all of the bioethanol technology options.
Fermenting the biomass intermediates [...]
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