Abstract
Field pennycress (Thlaspi arvense L.) is a widely distributed winter annual with a high seed oil content (36%) and is suitable as an off-season rotational crop in the midwestern United States. Erucic [(13Z)-docosenoic] acid (36.2%) is the most abundant constituent in the oil, with unsaturated and very long-chain (20+ carbons) fatty acids comprising most of the remaining content. In a previous study, we described field pennycress seed oil methyl esters (FPMEs). Here, we report field pennycress seed oil ethyl esters (FPEEs) along with the properties of blends of FPMEs and FPEEs (B2–B20) in petrodiesel. These results are compared to American and European biodiesel and petrodiesel fuel standards. FPEEs were characterized by excellent low-temperature properties (cloud point of −15 °C), high cetane number (61.4), high kinematic viscosity (5.65 mm2/s), and low oxidative stability (induction period of 4.6 h). Both kinematic viscosity and oxidative stability did not meet EN 14214 limits but were within the ranges ...
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