B20 Fuel Compatibility with Steels in Case of Fuel Contamination

Katriina Sirviö (), Jonna Kaivosoja, Carolin Nuortila, Huaying Wang-Alho, Seppo Niemi and Teemu Ovaska
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Katriina Sirviö: School of Technology and Innovations, University of Vaasa, P.O. Box 700, 65101 Vaasa, Finland
Jonna Kaivosoja: School of Technology and Innovations, University of Vaasa, P.O. Box 700, 65101 Vaasa, Finland
Carolin Nuortila: School of Technology and Innovations, University of Vaasa, P.O. Box 700, 65101 Vaasa, Finland
Huaying Wang-Alho: School of Technology and Innovations, University of Vaasa, P.O. Box 700, 65101 Vaasa, Finland
Seppo Niemi: School of Technology and Innovations, University of Vaasa, P.O. Box 700, 65101 Vaasa, Finland
Teemu Ovaska: School of Technology and Innovations, University of Vaasa, P.O. Box 700, 65101 Vaasa, Finland

Energies, 2023, vol. 16, issue 16, 1-9

Abstract: This study evaluated the compatibility with steels for three B20 fuel samples blended from fossil diesel and used cooking oil methyl ester. One sample was untreated and its concentration of copper was analyzed as <1 ppm. Another sample was doped by adding Cu at a concentration of ≤2 ppm and the third sample by adding Cu at a concentration of ≤4 ppm. Steel samples (carbon steel, stainless steel and a special alloy) were then put into the fuel blends and stored at 50 °C for 692 h. After storing, the metal concentrations of the fuel blends were again analyzed, and signs of corrosion were evaluated visually. The aim of this study was to find out if the fuel already contaminated by copper will affect the corrosion of the chosen steel qualities. Additionally, fuel properties were measured for all three blend samples before the immersion of steels. Visual evaluation of the steels indicated that signs of corrosion were seen in all studied samples, but Cu doping did not increase the signs of corrosion notably. The results also showed that the copper content from 1 to 2 and 4 ppm reduced the oxidation stability and increased the acid number of the fuel samples.

Keywords: biodiesel; diesel fuel; fuel blending; metal contamination; corrosion of steels (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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