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

Free to read

This article has been unlocked and is ready to read.


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 %)

Free to read

This article has been unlocked and is ready to read.


Digital Edition

PIN 25.2 Apr/May

May 2024

Safety - Carbon monoxide toxic and flammable gas detection Analytical Instrumentation - Density: A fundamental parameter at critical stages within the petroleum sector - Advancements and...

View all digital editions


HEFC 2024

May 23 2024 Beijing, China

NGVS 2024

May 23 2024 Beijing, China


May 28 2024 Tel Aviv, Israel


May 29 2024 Beijing, China


May 29 2024 Astana, Kazakhstan

View all events