TY - JOUR
T1 - Fatty acid methyl esters from waste beef tallow using supercritical methanol transesterification
AU - García-Morales, Ricardo
AU - Zúñiga-Moreno, Abel
AU - Verónico-Sánchez, Francisco J.
AU - Domenzain-González, José
AU - Pérez-López, Hugo I.
AU - Bouchot, Christian
AU - Elizalde-Solis, Octavio
N1 - Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2022/4/1
Y1 - 2022/4/1
N2 - The aim of this work is to perform synthesis of fatty acid methyl esters by means of one-step supercritical methanol transesterification from waste beef tallow without pre-treatment. Animal waste samples were collected from local markets and the experiments were carried out in a 170 cm3 batch reactor made of Inconel 625 alloy. On the first set of experiments, the fatty acid methyl esters were obtained by varying methanol:waste beef tallow (M:WBT) molar ratios from 25:1 to 47:1, at 613 K, 60 min of synthesis and pressures up to 27 MPa. Due to the high yield, a second set of transesterification reactions was carried out in order to assess the temperature effect in the interval of (578–693) K while keeping the molar ratio of 45:1. The fatty acid methyl esters were characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), gas chromatography coupled to mass spectrometry (GC-MS), high performance liquid chromatography coupled to mass spectrometry (HPLC-MS), cryoscopy, Gardner color, water content, free fatty acids and cloud point; calculations of the global yield from NMR and predicted cetane number were also performed.
AB - The aim of this work is to perform synthesis of fatty acid methyl esters by means of one-step supercritical methanol transesterification from waste beef tallow without pre-treatment. Animal waste samples were collected from local markets and the experiments were carried out in a 170 cm3 batch reactor made of Inconel 625 alloy. On the first set of experiments, the fatty acid methyl esters were obtained by varying methanol:waste beef tallow (M:WBT) molar ratios from 25:1 to 47:1, at 613 K, 60 min of synthesis and pressures up to 27 MPa. Due to the high yield, a second set of transesterification reactions was carried out in order to assess the temperature effect in the interval of (578–693) K while keeping the molar ratio of 45:1. The fatty acid methyl esters were characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), gas chromatography coupled to mass spectrometry (GC-MS), high performance liquid chromatography coupled to mass spectrometry (HPLC-MS), cryoscopy, Gardner color, water content, free fatty acids and cloud point; calculations of the global yield from NMR and predicted cetane number were also performed.
KW - Beef tallow
KW - Fatty acid methyl esters
KW - Supercritical methanol
KW - Transesterification
UR - http://www.scopus.com/inward/record.url?scp=85120895602&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2021.122706
DO - 10.1016/j.fuel.2021.122706
M3 - Artículo
AN - SCOPUS:85120895602
SN - 0016-2361
VL - 313
JO - Fuel
JF - Fuel
M1 - 122706
ER -