Abstract
The purpose of this study was to assess alternative aviation fuels under energy and environmental constraints. First candidates were listed and compared whether these could fulfill the requirement of the aviation fuel standard. It turned out that CTL (coal to liquid), GTL (gas to liquid) and BTL (biomass to liquid) had a potential as the alternative fuels. Next alternative fuel options, which contained hypothetical conditions such as location, scale, materials, etc. were set up. Cost, CO2 emission and other factors in each option were estimated as a basic data for the comparative analysis of AHP (analytic hierarchy process) to examine alternative aviation fuels. It concluded that GTL had the high priority and followed by CTL.
