Fatty acid methyl esters from waste beef tallow using supercritical methanol transesterification
| Autor: | Abel Zúñiga-Moreno, Hugo I. Pérez-López, Christian Bouchot, Ricardo García-Morales, Octavio Elizalde-Solis, José Domenzain-González, Francisco J. Verónico-Sánchez |
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| Rok vydání: | 2022 |
| Předmět: |
chemistry.chemical_classification
Chromatography Chemistry General Chemical Engineering Organic Chemistry Batch reactor Energy Engineering and Power Technology Fatty acid Transesterification High-performance liquid chromatography Supercritical fluid chemistry.chemical_compound Fuel Technology Yield (chemistry) Gas chromatography Methanol |
| Zdroj: | Fuel. 313:122706 |
| ISSN: | 0016-2361 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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