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Biodiesel fuels can also be produced using other alcohols, for example using ethanol to produce fatty acid ethyl esters, however these types of biodiesel are not covered by EN 14214 which applies only to methyl esters i.e. biodiesel produced using methanol. This European Standard exists in three official versions - English, French, German.
One reason for using FAME (fatty acid methyl esters) in biodiesel production, rather than free fatty acids, is to mitigate the potential corrosion they can cause to metals of engines, production facilities, and related infrastructure. While free fatty acids are only mildly acidic, over time they can lead to cumulative corrosion.
The most commonly used alcohol is methanol, producing fatty acid methyl esters (FAME). When ethanol is used fatty acid ethyl esters (FAEE) are created. Other alcohols used for the production of biodiesel include butanol and isopropanol. Fatty acid ethyl esters are biomarkers for the consumption of ethanol (alcoholic beverages). [1] [2] [3]
EN 590 is a standard published by the European Committee for ... Based on 98/70/EG it allows the blending of up to 7% fatty acid methyl ester biodiesel ...
There are also DIN standards for three different varieties of biodiesel, which are made of different oils: RME (rapeseed methyl ester, according to DIN E 51606) PME (vegetable methyl ester, purely vegetable products, according to DIN E 51606) FME (fat methyl ester, vegetable and animal products, according to DIN V 51606)
An example of an ester formation is the substitution reaction between a carboxylic acid (R−C(=O)−OH) and an alcohol (R'OH), forming an ester (R−C(=O)−O−R'), where R and R′ are organyl groups, or H in the case of esters of formic acid. Glycerides, which are fatty acid esters of glycerol, are important esters in biology, being one of ...
Fatty acid methyl ester synthesis [7] Lipids (triglycerides) themselves can be used as solvents, but are mostly hydrolyzed to fatty acids and glycerol (glycerin). Fatty acids can be esterified with an alcohol to give fatty acid esters, e.g., FAMEs (fatty acid methyl esters) if the esterification is performed with methanol.
Methyl hexanoate is the fatty acid methyl ester of hexanoic acid (caproic acid), a colourless liquid organic compound with the chemical formula CH 3 −(CH 2) 4 −COO−CH 3. It is found naturally in many foods and has a role as a plant metabolite. It can also be found in the cytoplasm of cells. [1]