Biodiesel production from crude rubber seed oil using supercritical methanol transesterification

摘要

Synthesis of biodiesel from rubber seed oil using a supercritical methanol was investigated under various reaction conditions (220-300°C, 80-180 bar), oil:methanol molar ratio of 1:20-1:60 and with reaction time of 10 min. Fatty acid methyl esters (FAMEs) content were analyzed by gas chromatography-mass spectroscopy (GC-MS). Most properties of produced biodiesel were in good agreement with biodiesel standard (EN 14214). The maximum FAME yield of 87.54% was obtained at 260°C, 160 bar, 10 min reaction time using oil:methanol molar ratio of 1:40. The result showed the acid value of rubber seed oil decreased to 0.58 mgKOH/g from initial 24 mgKOH/g.