The transesterification reactions of four different vegetable oils (sunflower, rapeseed, olive oil and used frying oil …-step transesterification reaction, followed by purification. The effects of the mass ratio of catalyst to oil (0.25 – 1.5%), the molar ratio of … reaction parameters. The optimal conditions for first stage transesterification were an ethanol/oil molar ratio of 12:1, NaOH …

, transesterification of beauty leaf oil to produce biodiesel has been investigated. A two-step biodiesel conversion method consisting of … acid catalysed pre-esterification and alkali catalysed transesterification has been utilized. The three main factors that … acid catalyst loading and 75 °C reaction temperature. In the alkali catalysed transesterification process 7.5:1 methanol to …

– in the transesterification conversion to biodiesel. It was found that the conversion efficiency of the waste oil using … transesterification of the waste oil via the use of ultrasound. …

In biodiesel production, the vegetable oil used as raw material for transesterification should be free of water and … transesterification of glyceride with methanol occurred simultaneously. The effects of the mass ratio of methanol to AO, the operation … reached 98.7%, and the glycerol yield for transesterification under 0.25:1 methanol/oil ratio, 290 °C and 20 min reaction time …