Determination of Oxidation Stability of Palm-Oil Biodiesel and Biodiesel-Diesel Blends by Rancimat and RSSOT Methods

Abstract Determination of oxidation stability becomes a critical fundamental analysis to ensure biodiesel quality. The biodiesel’s degradation by may compromise fuel properties and engine durability due forming products fatty acid decomposition. In this present study, the palm-oil its blends with diesel (cetane number 48) was determined using EN 15751 (Rancimat Method) ASTM D 7545 (Rapid Small Scale Oxidation Test, RSSOT Method). Here, determination from either test compared analyzed ANOVA mathematical function. Based on result, has 11 times higher than biodiesel, method. Additionally, correlation factor samples in work 21.52 for blend (B20 B90) it 23.66 that used as conversion value between Rancimat models presented high R 2 values 0.9535 0.9823 (B20-B90) indicated accuracy predict both accelerated methods.