Oxidative Stability improvement of diesel fuel during the storage

Y. Mesbah, K. Rahawi, S. Cheikh, H. Benmabrouka, B. Hamada


In this work a biobased material which is an antioxidant additive for diesel fuel during the storage was synthesized. Pomace olive oil extracted by maceration with hexane as raw material was chosen in the experimental process. Further, olive pomace wastes were fetched from a traditional oil mil. The involved processes were epoxidation by oleic acid of the pomace olive oil, opening of the oxirane ring, and esterification; respectively. The structures of the products were characterized and identified by both FTIR spectroscopy and by physic-chemical analysis methods. The effectiveness of our biobased antioxidant additive was tested by realizing an accelerated oxidation test (AOT) on the Algerian diesel of first by catalytic cracking without additive (blank) and further by testing diesel with different additive concentrations such as 2000, 3000, 4000 and 5000 ppm, respectively. The oxidative degradation of diesel with or without antioxidant was followed by sediment contents according to ASTM D2274. Diesel stability with antioxidant additive compared with the blank confirms the inhibition of the oxidation phenomena. Further the best antioxidant additive efficiency was recorded at the optimal concentration of 4000ppm.

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