Comparative corrosive characteristics of petroleum diesel and palm biodiesel for automotive materials

• Published in: Fuel processing technology 2010-10, Vol.91 (10), p.1308-1315
• Main Authors: Fazal, M.A., Haseeb, A.S.M.A., Masjuki, H.H.
• Format: Article
• Language: English
• Subjects: Aluminum; Aluminum base alloys; Applied sciences; Biodiesel; Copper; Corrosion; Crude oil; Diesel; Diesel fuels; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fuels; Palm; Palm biodiesel; Stainless steel; Weight reduction
• ISSN: 0378-3820; 1873-7188
• DOI: 10.1016/j.fuproc.2010.04.016

Corrosive characteristics of biodiesel are important for long term durability of engine parts. The present study aims to compare the corrosion behavior of aluminum, copper and stainless steel in both petroleum diesel and palm biodiesel. Immersion tests in biodiesel (B100) and diesel (B0) were carried out at 80 °C for 1200 h. At the end of the test, corrosion characteristic was investigated by weight loss measurements and changes on the exposed metal surface. Surface morphology was examined by optical microscope and scanning electron microscopy with energy dispersive X-ray analysis (SEM/EDS). Fuels were analyzed by using TAN analyzer, FTIR, GCMS and ICP in order to investigate the acid concentration, oxidation level with water content, compositional characteristics and presence of metal species respectively. Results show that the extent of corrosion and change in fuel properties upon exposure to metals are more in biodiesel than that in diesel. Copper and aluminum were susceptible to attack by biodiesel whereas stainless steel was not.