Biobutanol Standardizing Biodiesel from Waste Animal Fat

Abstract

This article contains measurements proving the benefits of biobutanol inmethyl ester fuels made from animal fats. Generally, methyl esters fromanimal fats have much worse fuel parameters than rape seed methylesters, for example. The tested biobutanol in this article has improvedproperties of produced methyl ester. Butanol is more suitable thanbioethanol for diesel engines. Fuel properties of density, kinematicviscosity, behaviour of fuel under low temperatures, and flash point andcetane number for different butanol content in fuel blend were tested.It was shown that butanol improves the quality of methyl ester fuelsfrom animal fats, especially its behaviour under low temperatures.Adding biobutanol to blends creates from animal fat methyl ester a moreattractive fuel. Furthermore, using animal fat waste for methyl esterproduction and waste lignocellulose for biobutanol production areconsidered to be advantageous by the EU as being more sustainable forisolation of waste transfers between regional, natural, and industrialcircles of the circular economy.