After large-scale collaborations between aircraft and engine manufacturers, oil companies, and airlines, aviation biofuel first entered commercial use in 2011. Since then, airlines including Lufthansa, KLM, Finnair and Air Alaska have begun using biofuels on certain commercial flights. Abu Dhabi carrier Etihad has now joined airlines committed to the commercialisation of biofuel in an initiative with Boeing and Total, with a successful test…