The comments on this article contained this interesting one on where the aviation industry ‘sees’ this going:
The idea is to gradually increase the amount of biofuel in the blend... the Virgin Atlantic flight earlier this year used a 25% mix, this flight is on 50% and so on. The reason that the aviation industry is looking at a so-called 'drop-in' biofuel is so that, as sustainable biofuel stocks become available over time, we can just mix it in to existing jet fuel, gradually increasing the amount of biofuel in the world jet fuel supply. The reason today's flight was significant is that it was the first use of a totally sustainable biofuel in a commerical aircraft. The tests will continue over the course of the next few years until the industry is satisfied that the fuel works well and is safe and regulators can certify it for commercial use. On our website, we have a page on the use of sustainable biofuels that may be of interest: www.enviro.aero/biofuels.aspx.
Air Transport Action Group,