Biodiesel is produced industrially by alkaline-catalyzed transesterification
of triacylglycerides derived from vegetal oils or animal
fats (Freedman et al., 1984; Reid, 1911). The alcohol most frequently
used in this process is methanol since its price has historically
been lower than that of other alcohols; however, growth of
ethanol production and consumption has led to an ethanol price
lower than that of methanol in some countries such as Brazil in
2007 and 2008 (Methanol price: , Ethanol price:
). Ethyl ester-based
biodiesel presents numerous advantages compared to methyl esters.
From an environmental point of view, ethyl esters exhibit
lower emissions of particulate matter and greenhouse gases, such
as carbon dioxide and nitrogen oxides (NOx) and are more
Biodiesel is produced industrially by alkaline-catalyzed transesterificationof triacylglycerides derived from vegetal oils or animalfats (Freedman et al., 1984; Reid, 1911). The alcohol most frequentlyused in this process is methanol since its price has historicallybeen lower than that of other alcohols; however, growth ofethanol production and consumption has led to an ethanol pricelower than that of methanol in some countries such as Brazil in2007 and 2008 (Methanol price: products/documents/MxAvgPrice_Aug2011.pdf>, Ethanol price:). Ethyl ester-basedbiodiesel presents numerous advantages compared to methyl esters.From an environmental point of view, ethyl esters exhibitlower emissions of particulate matter and greenhouse gases, suchas carbon dioxide and nitrogen oxides (NOx) and are more
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