biofuels...renewable primary products. topics definition of biofuels different types of biofuels...
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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
Definition of biofuels• Produced from renewable
biomass material• Commonly used as an
alternative• Cleaner fuel source• Much cleaner than
petrol/diesel alternatives
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
Biodiesel•Is an ester (more generally methyl ester)•Produced from vegetable oil•Rudolf Diesel originally developed its engine by means of peanut oil
Advantages
• climatic change needs reduction of the greenhouse effect
• less toxic• conserves ernergy• saving of resources• biodegradable• economize fossil basic materials -> e.g. Oil in place is unlasting
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: (-> excessive plant growth and decay; reductions in water quality, fish, and other animal populations)