Technical Paper
Determination of biodiesel oxidation stability of biodiesel B100 with optical spectroscopies of eletronic absorption UV-Visible correlation with Rancimat method DIN EN 14112
2010-10-06
2010-36-0144
Biodiesel is a biodegradable fuel that consists of alkyl esters, obtained from renewable sources, vegetal oil and animal fats reacting with a short-chain of aliphatic alcohols (typically methanol or ethanol) in the presence of a catalyst (reaction known as transesterification). An important property to use the biodiesel as fuel in diesel engines is its oxidation stability because biodiesel can contain unsaturated fatty acids, which are susceptible to oxidation, being able to change into polymerized compounds, which can cause engine problems such as blocked fuel filters. Numerous analytical methods have been applied to determine oxidation stability, European Union and Brazil use the same method DIN EN 14112 - known as Rancimat method that consists in the sample heating to 110°C where the products formed by the decomposition are blown inside by a flow of air in to measurement cell with distilled water.
