GPHY 319 Lecture Notes - Lecture 19: Bioenergy, Cellulosic Ethanol, Flatline
Document Summary
Gasoline use in 2012: 42 billion litres, 1427 pj equivalent. Replacing 100% of this fuel would require almost all biomass in the high availability scenario. Also requires high rates of conversion to fuel. Multiple options for alternatives (electric vehicles, public transport) Diesel use 2012: 17 billion litres, 635 pj equivalent. Replacing 100% of this fuel is possible, only would require about 28% of potential biomass under high availability. Addresses an area of concern that otherwise is not easily substituted. Not enough rail capacity to cover capacity carried by trucks. Could also be used to address other transport issues, particularly aviation biofuels. Could be saving 63 mt per year. Biofuel development will be rapid in most scenarios. Conventional ethanol: 3-4 fold increase over 15 years. Cellulosic ethanol: growth to 195 pj over 20 years. Conventional biodiesel: 20-fold increase over 35 years. F-t biodiesel: growth to 350 pj over 35 years. Bio-electricity: 30 fold increase over 20 years.
