Cellulosic ethanol is ethanol produced from cellulose rather than from the plant's seeds or fruit.
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14 Facts About Cellulosic ethanol
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The carbon dioxide that plants absorb as they grow offsets some of the carbon dioxide emitted when ethanol made from them is burned, so cellulosic ethanol fuel has the potential to have a lower carbon footprint than fossil fuels.
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3.
Interest in cellulosic ethanol is driven by its potential to replace ethanol made from corn or sugarcane.
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The main current disadvantage of cellulosic ethanol is its high cost of production, which is more complex and requires more steps than corn-based or sugarcane-based ethanol.
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5.
Cellulosic ethanol received significant attention in the 2000s and early 2010s.
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Germany6.
Cellulosic ethanol is a type of biofuel produced from lignocellulose, a structural material that comprises much of the mass of plants and is composed mainly of cellulose, hemicellulose and lignin.
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The first commercialized Cellulosic ethanol production began in Germany in 1898, where acid was used to hydrolyze cellulose.
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8.
Fermentation of glucose, the main product of cellulose hydrolyzate, to Cellulosic ethanol is an already established and efficient technique.
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9.
The overall carbon footprint and global warming potential of cellulosic ethanol are considerably lower and the net energy output is several times higher than that of corn-based ethanol.
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Main overall drawback of Cellulosic ethanol fuel is its lower fuel economy compared to gasoline when using Cellulosic ethanol in an engine designed for gasoline with a lower compression ratio.
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Main disadvantage of cellulosic ethanol is its high cost and complexity of production, which has been the main impediment to its commercialization.
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12.
However, the cellulosic ethanol market remains relatively small and reliant on government subsidies.
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Additionally, nonfermentable and unconverted solids left after making Cellulosic ethanol can be burned to provide the fuel needed to operate the conversion plant and produce electricity.
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14.
Cellulases and hemicellulases used in the production of cellulosic ethanol are more expensive compared to their first generation counterparts.
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