Topic
Soybean oil
About: Soybean oil is a research topic. Over the lifetime, 11154 publications have been published within this topic receiving 234952 citations. The topic is also known as: soya oil & soy bean oil.
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101 citations
TL;DR: In this article, the transesterification of two different frying oils (soybean oil and a mixture of soybean and cotton seed oil) with methanol, in the presence of an alkali catalyst (NaOH), by means of low-frequency ultrasonication (24 kHz, 200 W) and mechanical stirring (600 rpm) for the production of biodiesel fuel was studied.
Abstract: The transesterification of two different frying oils (soybean oil and a mixture of soybean and cotton seed oil) with methanol, in the presence of an alkali catalyst (NaOH), by means of low-frequency ultrasonication (24 kHz, 200 W) and mechanical stirring (600 rpm) for the production of biodiesel fuel was studied. The two different frying oils gave similar yields of isolated methyl esters both under mechanical stirring and ultrasonication. Also the physical and chemical properties of the two biodiesel fuels produced were investigated. The fuels produced were characterized by determining their density, viscosity, flash point, boiling point, cetane number, sulfur content, cloud point, pour point, cold filter plugging point, acid value, iodine value, and saponification value. From the physical and chemical properties of the two biodiesel fuels, it is concluded that these fuels have very similar properties to those of conventional diesel, except for the cetane number, which is higher, and the sulfur content of...
100 citations
TL;DR: In this paper, a rapid in situ transesterification process of sunflower oil with methanol assisted by diethoxymethane (DEM) is described, where DEM served as both extraction solvent and reaction promoter in the process.
Abstract: A rapid in situ transesterification process of sunflower oil with methanol assisted by diethoxymethane (DEM) is described in this article. DEM served as both extraction solvent and reaction promoter in the process. The effects of moisture content of sunflower seeds, catalyst category, molar ratio of catalyst/oil, molar ratio of methanol/oil, molar ratio of DEM/oil, reaction time, reaction temperature, and agitation speed on the in situ transesterification were investigated. The most important factors which influenced the crude biodiesel yield, free fatty acid (FFA) content, and fatty acid methyl ester (FAME) purity were the molar ratio of DEM/oil, molar ratio of catalyst/oil, and molar ratio of catalyst/oil, respectively. An empirical model of the rapid in situ transesterification process was established and used to determine the optimal reaction conditions. When the in situ transesterification was carried out at the molar ratio of catalyst/oil of 0.5:1, the molar ratio of methanol/oil of 101.39:1, the molar ratio of DEM/oil of 57.85:1, the agitation speed of 150 rpm, and reaction temperature of 20 degrees C, a product containing 97.7% FAME and 0.74% FFA was obtained within 13 min.
100 citations
TL;DR: In this paper, short term performance tests were conducted to evaluate crude soybean oil, crude-degummed soybeans oil and soybean ethyl ester as complete substitutes for No. 2 diesel fuel in a small diesel engine.
Abstract: SHORT term performance tests were conducted to evaluate crude soybean oil, crude-degummed soybean oil and soybean ethyl ester as complete substitutes for No. 2 diesel fuel in a small diesel engine. A longer term evaluation of the engine when using 100% crude soybean oil was prematurely terminated. Severe injector coking led to decreases in power output and thermal efficiency
100 citations
TL;DR: In this paper, an adaptation of the American Oil Chemists' Society Official Method Cd 8−53 for determining peroxides in fats and oils using a 0.5-g sample is described.
Abstract: An adaptation of the American Oil Chemists' Society Official Method Cd 8–53 for determining peroxides in fats and oils using a 0.5-g sample is described. Comparisons of the Official Method and the small-scale method were performed by analyzing soybean oil samples spiked with t-butyl hydroperoxide and autoxidized soybean oil samples. A linear relationship between the Official Method and the small-scale method was obtained with an R2 of 0.998. The small-scale method is sensitive, precise, and suitable for small sample sizes and uses only about 10% of the chemicals necessary for the Official Method.
100 citations