Manufacturing Ethanol - Organic
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Edexcel IGCSE Chemistry
Last updated 11:38 AM on 12/16/24
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6 Terms
1
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making ethanol by fermentation (conditions)
* anaerobic process
* sugars dissolved in water
* yeast
* 30-35 degrees celsius
* glucose → ethanol + carbon dioxide
* concentrated by fractional distillation
* sugars dissolved in water
* yeast
* 30-35 degrees celsius
* glucose → ethanol + carbon dioxide
* concentrated by fractional distillation
2
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what are the advantages to fermentation?
* low energy
* cheap
* renewable
* cheap
* renewable
3
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what are the disadvantages to fermentation?
* not pure
* slow process
* produces CO2
* slow process
* produces CO2
4
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making ethanol by the hydration of ethene (conditions)
* ethene
* steam
* 70-80 atmospheres
* concentrated phosphoric acid (catalyst)
* 350-400 degrees celsius
* steam
* 70-80 atmospheres
* concentrated phosphoric acid (catalyst)
* 350-400 degrees celsius
5
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what are the advantages to the hydration of ethene?
* quick
* 100% pure ethanol
* no waste
* doesn’t affect the food chain
* 100% pure ethanol
* no waste
* doesn’t affect the food chain
6
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what are the disadvantages to the hydration of ethene?
* high temperature - more energy needed
* non-renewable - from fossil fuels
* continuous
* non-renewable - from fossil fuels
* continuous
Note 
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