Originally Posted by dewayne6243
Already ordered me a set up. Not sure where you are getting your input but that is not true.
US Department of Energy is one source
The NOx potential is higher, Dependent upon the application. In an old IDI engine, it is usually only a 10% increase. But in the Newer turbodiesel applications like the powerstroke or cummins, that increase can be 30% or more.
A good aspect of biodiesel is that particulate matter and Hydrocarbon emissions drop sharply compared to "dinodiesel", indicating more complete combustion.
I know there are several "recipes" to make biodiesel, but all I have seen require the use of caustic soda and water to remove soaps. I understand the process also requires cooking, where light hydrocarbons and water are boiled off while the process undergoes a chemical change. This offsets any emissions benefit, unless some effort is made to reclaim what is boiled off.
Removing Glycerin is also a big problem, from what I understand glycerin is the cause of scuffed injectors and damage to modern diesel engines.
So I dunno about biodiesel, I really like the fact that it is a renewable fuel with large potential, but it has some obstacles to overcome. I think the biggest issue is the "home distiller". It scares the crud out of me that someone in my neighborhood has a "still" and is brewing up some of his own "renewable fuel" in an old water heater.
Large scale refieries can probably overcome the waste water and emissions concerns, and probably already have done so. This leaves the NOx issue....I see more catalyst's in our future.