RESUMEN
The synthesis of monoacylglycerol (MAG) through the glycerolysis of ethyl ester mixture (biodiesel) was investigated in this study from linseed oil, low-cost alternative feedstock, using an alkaline catalyst with green reagent. The transesterification double step process (TDSP), reaction with ethanol to ethyl esters yielded 97%. In the glycerolysis reaction, the optimum operating condition was in a temperature of 130 °C with 5% sodium hydroxide (NaOH) in 1 : 5 biodiesel-glycerol and 12 h reaction time, in open reactor. The reaction conditions showed an interesting conversion and monoacylglycerol yield of 98% and 76%, respectively. The determination and characterization of reaction products was carried out by Gas Chromatography (GC) method, Infrared Spectroscopy (IR), Thermogravimetric Analysis (TGA) and Hydrogen Nuclear Magnetic Resonance Spectroscopy (1H NMR).
RESUMEN
This work describes the ultrasound-assisted synthesis of saturated aliphatic esters from synthetic aliphatic acids and either methanol or ethanol. The products were isolated in good yields after short reaction times under mild conditions.
Asunto(s)
Etanol/química , Ácidos Grasos/síntesis química , Ácidos Grasos/efectos de la radiación , Metanol/química , Sonicación/métodos , Ésteres/química , Ésteres/efectos de la radiación , Etanol/efectos de la radiación , Ondas de Choque de Alta Energía , Metanol/efectos de la radiación , TemperaturaRESUMEN
In this work we described the cultivation of Chlorella vulgaris in a photobioreactor to algal biomass production. The dried biomass was used as feedstock for biodiesel production, it presented 26 percent lipids and via sonocatalysis stage of the methodology resulted in 60 percent of fatty acid methyl esters (FAME). The FAME content was confirmed by Gas Chromatography (GC).
