Tesis
Producciòn de biodiésel a partir de mezclas de aceite de palma (RBD) con aceites usados de cocina (ACU), utilizando como catalizadores carbones activados sulfonados a partir de cuesco de cacao y PET
Autor
Sánchez Rodríguez, Luz Angélica
Rojas Huertas, Paola Andrea
Institución
Resumen
The present work evaluated the biodiesel production from palm oil and waste cooking oil mixtures with methanol, and sulphonated activated carbons from cocoa shell and PET as heterogeneous catalysts. Initially, physicochemical properties of the mixtures were measured, such as acidity, acidity index, saponification index, viscosity and humidity; while the synthesized catalysts were characterized by Scanning Electron Microscopy (SEM), Brunauer, Emmet and Teller (BET), Fourier Transform Infrared Spectrometry (FTIR), Proximal Coal Analysis, and Hammett Indicators. Subsequently, the catalysts were evaluated in the different RBD-ACU mixtures (100% RBD, 75% RBD, 50% RBD, 75% ACU, 100% ACU), a mixture of AGL (M6) and other of ACU improved with AGL (M7). The reaction was carried out for three hours at 60° C and 6000 rpm, 12:1 methanol:oil molar ratio and mass ratio catalyst/oil of 6 %; additionally, the reuse of the PET catalyst was studied for three cycles, quantifying in each case the methyl esters content by gas chromatography. The experimental results show that the sulphonation method provides a catalyst with higher activity, allowing a maximum yield of 95% with mixture M6.