AP19676664 – Deep Eutectic Solvents for Fuel Desulfurization
The aim of the project is to develop new extractive systems based on deep eutectic solvents for the purification of fuels from sulfur compounds by extraction from the liquid phase.
Relevance The resulting deep eutectic solvents are a new class of environmentally friendly compounds capable of efficiently extracting sulfur compounds from fuels.
Scientific supervisor: Ph.D., Professor, Khadichakhan S Rafikova
Results obtained: Within the research project, scientific, technical, and patent information on deep eutectic solvents (DES) for fuel desulfurization was collected and analyzed. Various DES systems based on betaine, choline chloride, and quaternary ammonium salts were synthesized and characterized. Their extraction performance toward thiophene, benzothiophene, and dibenzothiophene was investigated, and the most effective compositions were identified. Optimal desulfurization parameters, including temperature, contact time, and DES-to-fuel ratio, were determined. It was shown that increasing sulfur concentration leads to a decrease in extraction efficiency. A techno-economic assessment was performed, confirming the promising potential of the developed DES systems.
List of publications with links to them
- Керимкулова А.Ж., Рафикова Х.С., Булатова Н.Б., Абдирафиева Д.О., Дариджан М.Е. Экстракционная сероочистка нефтяного топлива с использованием глубокоэвтектических растворителей // Вестник университета Шакарима. Технические науки. – 2024. – Т. 2 (14). – С. 481–495. – DOI: 10.53360/2788-7995-2024-2(14)-58. – URL: https://dx.doi.org/10.53360/2788-7995-2024-2(14)-58
- Islam S., Rubio C., Rafikova K., Mutelet F. Desulfurization and Denitrogenation Using Betaine-Based Deep Eutectic Solvents // Journal of Chemical & Engineering Data. – 2024. – Т. 69, № 6. – С. 2244–2254. – DOI: 10.1021/acs.jced.4c00052. – URL: https://dx.doi.org/10.1021/acs.jced.4c00052
- Ryspaeva S., Kerimkulova A., Rafikova K.S., Naurizova S., Islam S., Aydemir M., Kozhaisakova M. Deep Eutectic Solvents for Sustainable Management of Asphaltene Deposition in Oil Production // Engineered Science. – 2024. – Т. 29. – С. 1102. – DOI: 10.30919/es1102. – URL: https://dx.doi.org/10.30919/es1102
- Işik U., Rafikova K., Meriç N., Güzel R., Kerimkulova A., Akimbek A., Okumuş V., Durap F., Kayan C., Aydemir M. Half-sandwich ruthenium (II) and iridium (III) complexes of imidazole based phosphinite ligands: antioxidant and antibacterial activities as well as electrochemical properties // Chemistry Select. – 2024. – Т. 9, № 6. – e202304785. – DOI: 10.1002/slct.202304785. – URL: https://dx.doi.org/10.1002/slct.202304785
- Akimbek A.O., Jamalova G.A., Yernazarova A.K., Kaiyrmanova G.K., Yelikbayev B.K., Pagano M.C., Zazybin A.G., Rafikova K.S. Biodesulfurization of high-sulfur oil from the Karazhanbas field of Kazakhstan with deep eutectic solvents // Heliyon. – 2025. – Т. 11, № 2. – e41877. – DOI: 10.1016/j.heliyon.2025.e41877. – URL: https://doi.org/10.1016/j.heliyon.2025.e41877