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The total amount of energy input into the process compared to the energy released by burning the resulting ethanol fuel is known as the energy balance (or "energy returned on energy invested"). Figures compiled in a 2007 report by National Geographic [ 68 ] point to modest results for corn ethanol produced in the US: one unit of fossil-fuel ...
E85 ethanol is used in engines modified to accept higher concentrations of ethanol. In the US such FFVs are designed to run on any mixture of gasoline or ethanol up to 85% ethanol, whereas in countries such as Brazil where the climate is typically warmer, FFVs run on neat alcohol. There are a few major differences between FFVs and non-FFVs.
Sugarcane ethanol has an energy balance seven times greater than corn ethanol. [101] As of 2007, Brazilian distiller production costs were 22 cents per liter, compared with 30 cents per liter for corn-based ethanol. [102] Corn-derived ethanol costs 30% more because the corn starch must first be converted to sugar before distillation into ...
The Adjusted EBITDA 1 from Red Trail Energy ethanol and CCS assets, when combined with Adjusted EBITDA 1 from Gevo’s renewable natural gas (“RNG”) business, and other businesses, including Verity, is expected to make Gevo’s Adjusted EBITDA positive in 2025. The purchase price includes the ethanol production asset and the CCS asset.
Summary of the main ethanol blends used around the world in 2013. Several common ethanol fuel mixtures are in use around the world. The use of pure hydrous or anhydrous ethanol in internal combustion engines (ICEs) is only possible if the engines are designed or modified for that purpose, and used only in automobiles, light-duty trucks and motorcycles.
Concerns about rising gasoline prices and outside energy dependence led to a resurgence of interest in E85 fuel at the turn of the 21st century; for example, Nebraska mandated the use of E85 in state vehicles whenever possible in May 2005. Similarly, whereas selling any fuel containing more than 10% ethanol is currently illegal in some states ...
In other words, for the same energy content as one liter or one gallon of gasoline, one needs 1.6 liters/gallons of ethanol and 2.1 liters/gallons of methanol. The raw energy-per-volume numbers produce misleading fuel consumption numbers, however, because alcohol-fueled engines can be made substantially more energy-efficient.
Refining giant Valero Energy has released its fourth-quarter earnings. It was a busy quarter that delivered adjusted earnings of $1.78 per share, which was at the high end of Valero's guidance.