Ethanol Production

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  • Ethanol Production
    • Synthesis
      • Fractional distillation of crude oil
        • Ethene+ Steam = ethonal
          • A catalyst is used to speed up the reaction rate
      • Advantages- 100% atom economy - all products & used and resused
      • Disadvantage-Uses unrenewable resources & is unsustainable
    • Biotechnology
      • Using waste biomass & genetically modified enzymes
        • E.g.- rice hulls, corn stalks & wood waste
      • Optimum conditions - constant ph and temp 25-37
        • Otherwise enzymes will denature
      • Advantage- Carbon neutral & uses renewable sources
      • Disadvantage- Large amounts of energy are required for the reaction to take place
    • Fermentation
      • When distilled purer alcohol e.g. whisky & brandy are made
      • Using enzymes in yeast
        • Temp & Ph have to be specific
          • Oxygen cannot be present
        • Enzymes will be denatured if the alcohol is to high in concentration
      • Advantage- The process is carbon neutral
      • Disadvantage- It uses a lot of land & human food produce
        • The process is slow
  • Fermentation
    • When distilled purer alcohol e.g. whisky & brandy are made
    • Using enzymes in yeast
      • Temp & Ph have to be specific
        • Oxygen cannot be present
      • Enzymes will be denatured if the alcohol is to high in concentration
    • Advantage- The process is carbon neutral
    • Disadvantage- It uses a lot of land & human food produce
      • The process is slow
  • Ethene+ Steam = ethonal
    • A catalyst is used to speed up the reaction rate
  • Optimum conditions - constant ph and temp 25-37
    • Otherwise enzymes will denature

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