Effect of Soybean Oil Fatty Acid Composition and Selenium Application on Biodiesel Properties

Abstract

Biodiesel consisting principally of monounsaturated fatty acid methyl esters (FAME) has been reported to have the optimal balance between cold flow properties and oxidative stability, therefore producing a superior fuel. In addition, treating biodiesel with antioxidants such as selenium (Se) also increases oxidative stability. Fuel properties including acid value (AV), cloud point (CP), iodine value (IV), pour point (PP), peroxide value (PV), induction period (IP), onset temperature (OT), and kinematic viscosity (KV) were used to evaluate a newly developed Roundup Ready® soybean recombinant inbred line (RIL) and a commercial cultivar. The RIL had a fatty acid profile with elevated levels of monounsaturated FAME. TN07‐93RR was determined as the more desirable line for production of biodiesel, based on its fatty acid composition and subsequent fuel properties. The commercial cultivar AG3906 contained the highest abundance of polyunsaturated FAME and exhibited comparatively high IV and low oxidative stability. AG3906 was therefore not acceptable under the European biodiesel standard, EN 14214. However, TN07‐93RR and AG3906 both were considered satisfactory according to the American biodiesel standard, ASTM D6751. Foliar treatment of soybean plants with varying amounts of Se had no effect on subsequent biodiesel oxidative stabilities.

Solar-Heated Sustainable Biodiesel Production from Waste Cooking Oil Using a Sonochemically Deposited SrO Catalyst on Microporous Activated Carbon

“…Table demonstrates the total percent composition of saturated, monounsaturated, and polyunsaturated FAMEs obtained from each feedstock. The content and composition of the FAMEs obtained from each feedstock are in line with similar studies in the literature, which report 6–10% of saturated, 62–67% of monounsaturated, and 26–29% of polyunsaturated FAMEs for canola oil; 6–17% of saturated, 23–38% of monounsaturated, and 45–62% of polyunsaturated FAMEs for soybean oil; and 15–20% of saturated, 29–39% of monounsaturated, and 41–55% of polyunsaturated FAMEs for WCO. ,,,,− The presence of a higher percentage of saturated fatty acids is known to impart good oxidation resistance to biodiesel. ,,,, Moreover, biodiesel that obtains high levels of monounsaturated FAMEs has been reported to have the optimal balance between cold flow properties and oxidative stability, which makes it a superior fuel. , …”

“…The composition is expressed as the weight percent of each FAME component with respect to the total FAME amount measured by GC-MS analysis. Since each feedstock has a unique chemical composition, the biodiesel produced from various feedstocks has different fuel properties . Important diesel properties that are directly influenced by the FAME composition include low temperature operability, oxidative and storage stability, kinematic viscosity, exhaust emission, cetane number, and energy content. − Table shows that, regardless of the feedstock, FAMEs with C 16–18 hydrocarbons are the most abundant methyl esters in each biodiesel produced, constituting more than 96% of all FAMEs.…”

“…Since each feedstock has a unique chemical composition, the biodiesel produced from various feedstocks has different fuel properties . Important diesel properties that are directly influenced by the FAME composition include low temperature operability, oxidative and storage stability, kinematic viscosity, exhaust emission, cetane number, and energy content. − Table shows that, regardless of the feedstock, FAMEs with C 16–18 hydrocarbons are the most abundant methyl esters in each biodiesel produced, constituting more than 96% of all FAMEs. The low percentage of methyl esters with a long carbon chain (more than 18 carbons) is a desirable trait for biodiesel, as it leads to a lower viscosity value. , The limit set by the EN 14214 specifications is a max of 1 wt % polyunsaturated methyl esters with more than four double bonds.…”

“…Since each feedstock has a unique chemical composition, the biodiesel produced from various feedstocks a ND: not detected, ∑saturated = C16:0 + C18:0 + C20:0, ∑monounsaturated = C18:1 + C20:1, and ∑polyunsaturated = C18:2. has different fuel properties. 50 Important diesel properties that are directly influenced by the FAME composition include low temperature operability, oxidative and storage stability, kinematic viscosity, exhaust emission, cetane number, and energy content. 50−52 Table 2 shows that, regardless of the feedstock, FAMEs with C 16−18 hydrocarbons are the most abundant methyl esters in each biodiesel produced, constituting more than 96% of all FAMEs.…”

Identification of Quantitative Trait Loci (QTL) Underlying Protein, Oil, and Five Major Fatty Acids’ Contents in Soybean

“…Another use for modified soybean oils is the production of biodiesel fuel which has emerged as a potential renewable energy source to help alleviate environmental concerns. A high percentage of oleic acid is desirable for biodiesel to enhance biodiesel's oxidative stability [7]. However, a high percentage of linolenic and linoleic acids are desirable to increase the energy content of biodiesel and decrease the gelling temperature.…”