Abstract for Post: Evaluation of Choline Chloride-Based Deep Eutectic Solvents for Purification of Biodiesel Derived from Lumbang (Aleurites moluccana)

Author(s): Uzma Meraj & Kouadio Marc Cyril
Affiliation: Department of Biology, Faculty of Science and Health, Koya University, Danielle Mitterrand Boulevard, Koya KOY45, Kurdistan Region – F.R. Iraq. Department of Chemistry, Faculty of Science and Health, Koya University, Danielle Mitterrand Boulevard, Koya KOY45, Kurdistan Region – F.R. Iraq.
Corresponding Email: Kouadio@gmail.com

This study explores the effectiveness of choline chloride-based deep eutectic solvents (DESs) in purifying biodiesel produced from lumbang (Aleurites moluccana) oil. The oil, which contains approximately 6.5% free fatty acids, was converted to biodiesel using a two-step direct acid-base catalysis method. Three DESs were synthesized in molar ratios of 1:2 (ChCl:Glycerol), 1:2 (ChCl:Ethylene Glycol), and 1:2:2 (ChCl:Glycerol:Ethylene Glycol), and employed at 1:1 and 2:1 molar ratios relative to biodiesel. Purification efficiency was evaluated through physicochemical analyses. Among the DESs tested, the binary system of ChCl:Ethylene Glycol at a 1:1 ratio demonstrated the highest extraction efficiency, reducing methanol, total glycerides, and unreacted triglycerides by 98.0%, 89.0%, and 99.9%, respectively. Improvements were observed in fatty acid methyl ester content and a reduction in viscosity, indicating enhanced fuel quality. These findings affirm the potential of DESs as eco-friendly solvents in biodiesel purification, promoting the economic viability of lumbang-based biodiesel.