Optimization of the activity of CaO/Al2O3 catalyst for biodiesel production using response surface methodology

In this work the response surface methodology (RSM) in conjunction with the central composite design (CCD) were used to optimize the activity of CaO/Al2O3 solid catalysts for the production of biodiesel. In order to measure the catalyst activity, we used palm oil as a representative raw material for the conversion to biodiesel. The biodiesel production was carried out in a batch laboratory scale reactor. The results showed that both the calcination temperature and the amount of calcium oxide loaded on the support had significant positive effects on the biodiesel yield. The maximum basicity and biodiesel yield obtained were about 194 μmol/g and 94%, respectively. Overall, the catalyst showed high performance at moderate operating conditions and its activity was maintained after two cycles.

The catalytic activity of CaO/Al2O3 was optimized for transesterification of palm oil using response surface methodology. The results proved that both the loading amount of CaO on the support and the calcination temperature had significant effects on the biodiesel yield. The maximum basicity and methyl ester yields obtained were approximately 194 μmol/g and 94%, respectively.Figure optionsDownload as PowerPoint slide