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Ethanol from sugarcane is known as a biofuel because the ethanol is derived from a biological, renewable source. Burning this releases recently absorbed carbon dioxide so it is part of the carbon cycle.
Ethanol from ethene (or ethylene) is typically produced from fossil fuels, namely petroleum, so it is a non-renewable resource. Burning this releases carbon dioxide that was absorbed millions of years ago, so it is all extra. Burning fossil fuels is causing global warming.
What else can I help you with?
What is the difference between fermentation and hydration?
Fermentation is the process of making alcohol (ethanol) by mixing sugar and yeast in a barell: sugar + yeast ----> ethanol + carbon dioxide Hydration is another process of making alcohol (ethanol) by heating water and ethene at a temperature of around 300 degrees celcius under high pressure: ethene + steam -----> ethanol One big difference between fermentation and hydration is that fermentation pproduces the bi-product cabon dioxide whereas hydration doesn't. Another difference coulkd be that the reaction of hydration happens a lot faster than that of fermentation.
What statement best describes lactic acid fermentation?
Sugar from plant material is converted into ethanol and carbon dioxide by fermentation. The enzymes found in single-celled fungi (yeast) are the natural catalysts that can make this process happen: Unlike ethene, sugar from plant material is a renewable resource.
How can ethane be used to make ethanol?
There are many methods. A few are listed below: 1. by the hydrogenation of ethene. 2. by the hydrogenation of ethyne. 3. by the reaction of methyl halide in presence of sodium (Wurtz reaction).
How much ethanol does fermenting 100g of sugar produce?
Ethanol produces around 80% by fermenting 100g of sugar produce.
How many gallons of ethanol is made from fifty pounds of sugar?
twelve lbs of sugar makes one gallon of ethanol.
How do you make ethanol gas?
Ethanol gas is typically made through the fermentation and distillation of plant materials such as corn or sugar cane. The process involves breaking down the sugars in the plants using yeast, then distilling the fermented mixture to separate the alcohol (ethanol) from the water and other byproducts.
What type of fuel is ethanol?
Ethanol (ethyl alcohol) is a fuel made by fermentation or the substitution of ethylene. It is described as a "biofuel" by proponents when it is made from corn, grain, sugar or cellulose, it can also be made by industrial process as a by-product or major product.
What is the reaction from sugar to ethanol called?
The reaction from sugar to ethanol is called fermentation. This process involves the conversion of sugars such as glucose into ethanol and carbon dioxide by yeast or bacteria in the absence of oxygen.
What is the difference between fermentation and hydration?
Fermentation is the process of making alcohol (ethanol) by mixing sugar and yeast in a barell: sugar + yeast ----> ethanol + carbon dioxide Hydration is another process of making alcohol (ethanol) by heating water and ethene at a temperature of around 300 degrees celcius under high pressure: ethene + steam -----> ethanol One big difference between fermentation and hydration is that fermentation pproduces the bi-product cabon dioxide whereas hydration doesn't. Another difference coulkd be that the reaction of hydration happens a lot faster than that of fermentation.
What is added to ethene to produce ethanol?
If starting with ethane C2H6 the hydrogens must be reduced to form C2H4 (ethylene) creating a double bond between the carbons (H2C=CH2) This compound (ethylene) is exposed to concentrated sulfuric acid (breaking the bond) and forming C2H3SO4H then water to substitute an OH group on one carbon to form H3CH2OH (ethanol) Alternately the ethylene may be catalyzed by phosphoric acid on a substrate to hydrolize directly to form ethanol.
How do you separate ethanol and sugar?
To separate ethanol and sugar, you can use a process called distillation. Ethanol has a lower boiling point than sugar, so by heating the mixture, the ethanol will vaporize first and can be collected as a separate component. This allows you to separate the ethanol from the sugar in the mixture.
What are the chemical steps for converting corn to ethanol?
Corn is first ground into a fine powder, which is then mixed with water and enzymes to break down the starch into smaller molecules. Yeast is then added to ferment the sugar into ethanol, carbon dioxide, and heat. The mixture is distilled to separate the ethanol from the other components, resulting in pure ethanol.
What fuel can be made from sugar?
biofuel
What statement best describes lactic acid fermentation?
Sugar from plant material is converted into ethanol and carbon dioxide by fermentation. The enzymes found in single-celled fungi (yeast) are the natural catalysts that can make this process happen: Unlike ethene, sugar from plant material is a renewable resource.
The us ethanol is made from what plant?
The plants themselves do not produce any ethanol at all. The plants produce sugars of various types, and then humans use a number of different processes to convert sugars into ethanol (the old fashioned method is simple fermentation with yeast for instance). Which plants allow humans to produce the most ethanol from a given plant depends on what sugars their cells produce and the technology we have to convert that sugar to ethanol. Corn is not the best crop for generating ethanol as it does so fairly inefficiently (it takes a lot of energy to grow and doesn't produce much ethanol). The best plant for making ethanol is sugar beet. Sugar cane is also very good. Really the best way to make ethanol would be from very fast growing plants (the fastest is called switchgrass), but to do that we need to discover how to efficiently convert cellulose into ethanol instead of sugar because these fast growing plants don't make sugar. We don't know how to convert cellulose, but we're working on it in many laboratories around the world!
How do you make ethanol from sugar cane?
To make ethanol from sugar cane, the sugar cane is crushed to extract the juice, which is then fermented using yeast to convert the sugars into ethanol. The ethanol is separated and purified through distillation, resulting in a high-proof ethanol that can be used as a biofuel or for other industrial purposes.
When can you describe ethanol as a bio-fuel?
We can describe ethanol as a biofuel after the sugar has been fermented. It then gives off a greenhouse gas, carbon dioxide, when burnt. However, the sugar cane absorbs the gas during photosynthesis.
