Research output: Contribution to journal › Article
Ultrasound Assistant Deep-Eutectic-Solvent-Based Liquid–Liquid Microextraction for the Determination of Transesterification Catalyst in Biodiesel Samples. / Шишов, Андрей Юрьевич; Markova, U. O.; Nizov, E. R.; Melesova, M. A.; Meshcheva, D. A.; Krekhova, F. M.; Bulatov, A. V.
In: Theoretical Foundations of Chemical Engineering, Vol. 57, No. 1, 12.05.2023, p. 104-111.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ultrasound Assistant Deep-Eutectic-Solvent-Based Liquid–Liquid Microextraction for the Determination of Transesterification Catalyst in Biodiesel Samples
AU - Шишов, Андрей Юрьевич
AU - Markova, U. O.
AU - Nizov, E. R.
AU - Melesova, M. A.
AU - Meshcheva, D. A.
AU - Krekhova, F. M.
AU - Bulatov, A. V.
PY - 2023/5/12
Y1 - 2023/5/12
N2 - Abstract: Hydroxides of alkali and alkaline earth metals are most widely used as catalysts for transesterification of triglycerides of fatty acids in biodiesel production. After biodiesel purification, the determination of catalyst residue is performed to prevent their excess accumulation. Catalysts can promote the degradation of biodiesel. In this research, a simple, fast, and environmentally friendly strategy for the sensitive determination of transesterification catalysts (sodium, potassium, calcium, and magnesium) in biodiesel samples by flame atomization atomic absorption spectrometry is developed. The developed procedure is based on ultrasound assistant dispersive liquid–liquid microextraction of the catalysts in a hydrophilic deep eutectic solvent prepared by mixing quaternary ammonium salt and carboxylic acid. The effect of the nature of the deep eutectic solvent on the mass transfer of catalysts is investigated; in addition, the microextraction procedure conditions are optimized to obtain high sensitivity. The limits of detection established for the proposed procedure are 0.03 mg kg–1 for all analytes. No hazardous and volatile organic solvents are required for sample pretreatment. Sample preparation time is less 15 min.
AB - Abstract: Hydroxides of alkali and alkaline earth metals are most widely used as catalysts for transesterification of triglycerides of fatty acids in biodiesel production. After biodiesel purification, the determination of catalyst residue is performed to prevent their excess accumulation. Catalysts can promote the degradation of biodiesel. In this research, a simple, fast, and environmentally friendly strategy for the sensitive determination of transesterification catalysts (sodium, potassium, calcium, and magnesium) in biodiesel samples by flame atomization atomic absorption spectrometry is developed. The developed procedure is based on ultrasound assistant dispersive liquid–liquid microextraction of the catalysts in a hydrophilic deep eutectic solvent prepared by mixing quaternary ammonium salt and carboxylic acid. The effect of the nature of the deep eutectic solvent on the mass transfer of catalysts is investigated; in addition, the microextraction procedure conditions are optimized to obtain high sensitivity. The limits of detection established for the proposed procedure are 0.03 mg kg–1 for all analytes. No hazardous and volatile organic solvents are required for sample pretreatment. Sample preparation time is less 15 min.
KW - biodiesel
KW - deep eutectic solvent
KW - flame atomization atomic absorption spectrometry
KW - transesterification catalysts
KW - ultrasound assistant dispersive liquid–liquid microextraction
UR - https://www.mendeley.com/catalogue/bf2b7696-0703-33fb-9621-c2522121c543/
U2 - 10.1134/s004057952301013x
DO - 10.1134/s004057952301013x
M3 - Article
VL - 57
SP - 104
EP - 111
JO - Theoretical Foundations of Chemical Engineering
JF - Theoretical Foundations of Chemical Engineering
SN - 0040-5795
IS - 1
ER -
ID: 108525661