Biofuels

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Biofuels

• ...renewable primary products

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Topics

• Definition of biofuels
• Different types of biofuels
• Types of plants used worldwide
• Rapeseed oil in Germany
• Comparison to other fuels
• Advantages and disadvantages of biofuels

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Definition of biofuels

• Produced from renewable biomass material
• Commonly used as an alternative
• Cleaner fuel source
• Much cleaner than petrol/diesel alternatives

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Different types of biofuels

• Bioethanol
• Biodiesel
• Biogas
• Biobuthanol

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Bioethanol

• Actually ethyl alcohl(also referred to as
  ethanol)
• Identical to drinking alcohol by its composition
• Mainly two ways of producing alcohol
• 1. synthesis of hydrocarbons
• 2. from biomass
• Only 2. approach deserves the terminology
  bioethanol
• Chemical Formular CH3CH2OH

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• Example of extracting Bioethanol (corn)

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Biodiesel

• Is an ester (more generally methyl ester)
• Produced from vegetable oil
• Rudolf Diesel originally developed its engine by
  means of peanut oil

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• Example of extracting biodiesel (rapeseeds)

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Types of plants used worldwide
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Biodiesel

• Rapeseeds
• palm fruit
• Soybeans
• Sunflower

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Bioethanol

• Sugarbeet
• Wood
• Cereals
• Corn

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Other fuels

• Wood and cellulose
• Biomass
• Starch

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Advantages and disadvantages of biofuels
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• Advantages
• climatic change needs reduction of the greenhouse
  effect
• less toxic
• conserves ernergy
• saving of resources
• biodegradable
• economize fossil basic materials
• -gt e.g. Oil in place is unlasting

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Disadvantages

• losing of nature (e.g. cultivation of oilpalms)
• acidification of fields
• water pollution by pesticides
• eutrophication of waterbodies
• higher price of corn, palm oil etc.
• reduction of richness in species
• Eutrophication (-gt excessive plant growth and
  decay reductions in water quality, fish, and
  other animal populations)

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