In the wake of Air New Zealand, Continental Airlines and Japan Airlines successfully testing biodiesel in their airliners, discount flyer JetBlue has announced it will try biofuels in its Airbus A320-200 by the spring of 2010.
This story from Flightglobal.com says the company plans to use non-food feedstocks:
Feedstocks being considered for the trial include jatropha, algae, waste forest residues, organic waste streams and the non-edible component of corn plants, corn stover, the spokesman says.
The biofuel should have the same properties as standard jet fuel and should not require engine or auxiliary power unit (APU) modifications, the spokesman adds.
And if I know JetBlue, the company will probably find a way to do it cheaper than everyone else.