history of bioethanol - presentation
DESCRIPTION
Powerpoint presentation of my dissertation - The history and development of bioethanol as an alternative fuelTRANSCRIPT
The History And The History And Development Of Development Of Bioethanol As An Bioethanol As An Alternative FuelAlternative Fuel
Christopher McAtominey
OverviewOverview
•What is bioethanol?
•Why bioethanol as an alternative fuel?
•The future of bioethanol
EthanolEthanol
•Produced by hydrating ethylene or by
fermenting sugars
CH3CH2OH + 3O2 2CO2 + 3H2O
•First ever engine ran on ethanol
•Used as a rocket fuel in WW2
BioethanolBioethanol
• Produced by fermenting sugars
• Sugars are from natural sources (biomass)
eg sugarcane, maize
• Burnt as fuel
•Widely used in Brazil
Alternative FuelsAlternative Fuels
• Climate change
• Depletion of crude oil
• Legislation
Alternative FuelsAlternative Fuels
• Carbon neutral
• Independence
• Efficiency
Alternative FuelsAlternative Fuels
Future of BioethanolFuture of Bioethanol
•Currently only processed from sugars
•Aim is to convert all biomass to ethanol
•Engineering micro-organisms
GMGM
•Alcohol resistant yeast
•1.5 x 1012 tonnes of biomass is cellulose
•Cellulases convert cellulose into sugars
ProblemsProblems
•Currently not carbon neutral
•Cellulases do not work well in vitro
•Predicted that hydrogen will be major
fuel of future
FinFin
Any Questions?