Using deep eutectic solvents for the removal of glycerol from palm oil-based biodiesel

K. Shahbaz*, Farouq S. Mjalli, M. A. Hashim, Inas M. Al Nashef

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

133 Citations (Scopus)


One of the essential steps in the manufacture of biodiesel is its purification from the glycerol by-product. The produced biodiesel should have a low glycerol content which is regarded as one of the important needed pointers for passing the international biodiesel standards. Low cost Deep Eutectic Solvents (DES) have been tested for their solvation properties. In this work, DESs were used to remove all free glycerol and reduce total glycerol from palm oil-based biodiesel. Liquid-liquid extraction experiments were conducted to explore the effect of DES structure on the glycerol separation. All synthesized DESs were able to remove all free glycerol, successfully. The optimum molar ratio of DES to biodiesel was found to be 1:1 for all DESs.

Original languageEnglish
Pages (from-to)3349-3354
Number of pages6
JournalJournal of Applied Sciences
Issue number24
Publication statusPublished - 2010


  • Biodiesel
  • Deep eutectic solvents
  • Glycerol purification
  • Palm oil

ASJC Scopus subject areas

  • General


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