BioDieselNow - Renewable biodiesel fuel

Burning glycerin isn't "simple," as incomplete combustion can form carcinogenic acrolein . Regarding leftover "stuff," could you clarify? If properly combusted, the product should be ash - similar to that of other burnt compounds - and salts from the residual catalyst.

MuddyDiesel: So what doese everyone here do with the Glycerin. Burn it, take it to a digester, recover the methanol and compost the rest - many options. I've heard there are more and more people buying raw glycerin these days too. I'm trying to find a good waste oil burner/boiler/heater system that will...