RT info:eu-repo/semantics/article
T1 Hydrothermal hydrolysis of triglycerides: Tunable and intensified production of diglycerides, monoglycerides, and fatty acids
A1 Menalla, Enkeldo
A1 García Serna, Juan
A1 Cantero Sposetti, Danilo Alberto
A1 Cocero Alonso, María José
K1 Supercritical water
K1 Process intensification
K1 Triacetin
K1 Sunflower oil
K1 Ultrafast reactions
AB This study focuses on utilizing subcritical and supercritical water technology to produce intensive and selective diglycerides, monoglycerides, and fatty acids. The water properties can be easily modified by adjusting pressure and temperature, which promotes an improving solubility of the triglycerides in water and a selective production of glycerides. Triacetin and sunflower oil were used as models for short and long-chain components, exploring a range of temperatures (250 to 400 °C), pressures (22.0 to 25.0 MPa), and reaction times (0.7 to 29 s). A conversion of 98.5 % of sunflower oil is reached at 375 °C and 25.0 MPa in 29 s. The resulting products are 16.3 % diglycerides, 27.9 % monoglycerides, 48.9 % fatty acids, and 5.3 % glycerol. On the other hand, only 13 % of the oil is hydrolyzed at 300 °C, 22.0 MPa, with a reaction time of 23.6 s. The main product at this condition was fatty acids with a yield of 3.7 %. Furthermore, a kinetic model was developed to obtain comprehensive kinetic parameters for both raw materials to evaluate their reactivity during hydrolysis. This study provides valuable insights into the hydrolysis kinetics and the most promising conditions to make valuable products like fatty acids, mono and diglycerides, and glycerol.
PB Elsevier
SN 1385-8947
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/73069
UL https://uvadoc.uva.es/handle/10324/73069
LA eng
NO Chemical Engineering Journal, 2024, vol. 493, 152391
NO Producción Científica
DS UVaDOC
RD 05-feb-2025