It's not “used;” in fact significant efforts are made to remove it from jet fuel… Sulfur exists in naturally occurring petroleum; crude oil. We remove some of that sulfur to make low-sulfur unleaded gasoline. read more
Some sulfur is invariably left behind in mass scale produced petroleum products, including Jet Fuel. Jet fuel can contain anywhere from 15 to 3000 parts per million (ppm) of sulfur. However, it is naturally occurring, and It is not added to jet fuel. read more
Jet-A is a relatively high sulfur fuel, diesel is low sulfur and EPA requirements are getting more stringent about sulfur in diesel every year. After all, we are now in the Ultra-Low Sulfur diesel era. read more
The European Aviation Safety Agency (EASA) and the US Federal Aviation Administration (FAA) have recently sponsored studies into ultra-low sulfur jet fuel standard (15ppm), or ULSJ, and the FAA wants to half aviation's serious health impacts by 2018, relative to a 2005 baseline. read more