Analytical Instrumentation
Determination of Free Glycerol in Biodiesel by using PDA UV-Vis Spectrophotometer -Colorimetric method -
Dec 06 2006
Author: SeongHo Gong on behalf of Unassigned Independent Article
Biodiesel is the typical biofuel, made from vegetable and animal oil, and is currently used for diesel fuel car and heating, blended with diesel fuel or as a pure fuel. Recently, the need of biodiesel has rapidly increased as it is regarded as one of the alternative energies of coal oil. This is generally produced through the ester-transesterfication reaction by adding MeOH to triglyceride as shown in Figure 1 below. The product of the reaction is fatty acid methyl esters (FAME), which are known as biodiesel, and glycerol. As the co-product, glycerol, affects the quality of biodiesel, contents of glycerol are limited in the ASTM. (Total glycerol: below 0.24 %, free glycerol: below 0.02 %)
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