As the use of biodiesel fuel grows, so does attention to the methods used for its preparation, purification, and analysis. The preparation of biodiesel is simple, but generally results in biodiesel contaminated with free fatty acids, free glycerol, and bound glycerol. In this study, a high performance liquid chromatography instrument with evaporative light scattering detection was developed and used for rapid determination of free glycerol in biodiesel. A calibration curve was prepared to establish the limits of detection, which was compared to the ASTM standards for free glycerol. The new method was used to compare the glycerol content of a biodiesel fuel before and after a dry wash with a novel drywash material.

High performance liquid chromatography-evaporative light scattering device (HPLC-ELSD) method development for a rapid determination for glycerol in biodiesel before and after dry wash

245th National Meeting (2013)

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