0
Why is ethanol from sugar cane called biofuel but ethanol from ethene not?
Wiki User
∙ 8y ago
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.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
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.
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).
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 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 can be produced by:Anaerobic fermentation of natural sugar (beets, cane, starch) done by yeastPetrochemically by acid catalized reaction of ethene with water
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.
What is the reaction from sugar to ethanol called?
Fermentation.
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 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 fuel can be made from sugar?
biofuel
Is ethanol a sugar?
No, ethanol is an alcohol.
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).
What are examples of ethanol?
Ethanol, CH3CH2OH, is cane sugar alcohol also called ethyl alcohol. It is the alcohol present in alcoholic beverage's.
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.
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.
Why doesn't the complete combustion of ethanol from sugercane contribute to global warming?
Ethanol from sugar cane is a biofuel. Burning biomass or biofuel does not contribute to global warming. When the sugar cane was recently growing it removed carbon dioxide from the air. When the ethanol is burnt, that same carbon dioxide is returned to the air. This is part of the natural carbon cycle.The carbon dioxide that comes from burning fossil fuels (coal, oil and natural gas) was taken out of the atmosphere millions of years ago, so releasing it now is adding extra CO2 (and causing global warming).This is why biomass is renewable energy and better than fossil fuels.
