Abstract
The biodiesel–diesel–ethanol blend represents an important alternative fuel for diesel engines; however, changes in the fuel composition and the introduction of new alternative fuel often results in corrosion and degradation of the automobile fuel system parts. In this present study, the corrosion behavior of carbon steel in B20D70E10 (biodiesel 20%, diesel 70% and ethanol 10%) fuel blend was studied by static immersion at room temperature and 60 °C. The effect of B20D70E10 fuel blend on corrosion rate, morphology of corrosion products, and chemical structure of carbon steel were studied. In addition, the change of fuel properties, namely, total acid number, density, viscosity, calorific value, flash point, and color changes were also investigated. Moreover, fuel compositional changes, such as water content and oxidation product level in the fuel blends were examined. The results showed that the degradation of fuel properties and corrosion rate of carbon steel in B20D70E10 are lower than neat biodiesel (B100), whereas slightly higher than petro-diesel (B0)
Highlights
The increasing demands of petroleum-based fuels together with the environmental pollution issues have motivated the efforts on discovering new alternative fuels
The objective of this study is to investigate effect of these BDE blends on corrosion behavior of carbon steel
This is due to the investigated carbon steel in that study contained 0.2% C, 0.5% Mn, 0.5% Si and 98.8% Fe in composition, whereas the carbon steel used in the present study contains only 0.2% C, 0.4% Mn and 99.4% Fe
Summary
The increasing demands of petroleum-based fuels together with the environmental pollution issues have motivated the efforts on discovering new alternative fuels. A maximum of 30% biodiesel (ethyl or methyl ester) and ethanol blend can be added to diesel fuel effectively. Most of the researchers recommend that a maximum of 20% (Vol.) biodiesel and 10% (Vol.) ethanol can be used in diesel engine for better engine performance and emissions [3]. The BDE blend represents an important alternative fuel for diesel engines; changes in the fuel composition and the introduction of new alternative fuel often results in corrosion and degradation of the automobile fuel system parts. Many researchers have investigated the corrosion behavior of carbon steel in different biodiesel. The objective of this study is to investigate effect of these BDE blends on corrosion behavior of carbon steel. The impact of carbon steel on degradation of BDE fuel properties was investigated
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