In the present study, non-catalytic supercritical methanol (SCM) reaction was utilized to
produce biodiesel from palm oil. The effects of free fatty acids and water content on the yield
of biodiesel were investigated and subsequently compared with conventional catalytic
reaction. In addition, the feasibility of utilizing co-solvent to reduce the operating conditions
needed in SCM was carried out as well. Results show that catalytic reaction suffers from low
yield with the presence of high water content in oil. On the other hand, the yield of SCM …