So will butanol..
Straight Butane produces more, but butanol has the extra Oxy atom and so burns a bit more efficiently, and gives off part of it's exhaust as water vapor..
But it will still exhaust CO2..
Just about all fuels will, with the exception of hydrogen..
But basically, what you're dealing with here is methane..
Natural Gas.. ( which can be liquefied )
And this article is from the "Fargo Forum".. in ND..
North Dakota is one of the nation's largest producers of .. Liquid Natural Gas..
They "crack" it out of their massive coal fields and produce LNG for much of the nation's power plants..
It is, in fact, piped all the way to the East Coast..
You can kind of bet that North Dakota isn't necessarily that interested in ethanol, from a financial perspective..
They could produce butanol however, from that same coal source..
Butane is a product of the coal / methane process...
Yes, you can make butanol from natural gas / petroleum as well as "bio"butanol from sugar beets, etc., and it is the same thing..
The farmers in NoDak LOVE Ethanol. They're all driving new Corvettes funded by ecoweenies in California. Corn is the new Meth!