Characteristic Study of Biodiesel from Used Cooking Oil using Nipah Skin Ash as a Heterogeneous Catalyst

One type of renewable alternative energy that has great potential to be developed is biodiesel. Biodiesel a fuel consisting mixture mono-alkyl esters long-chain fatty acids made from sources such as vegetable oils or animal fats. Such the oil products can used feedstock for biodiesel production cooking oil. Used The purpose this research study characteristics effect catalyst mass, ratio mole methanol mole, and adding THF 1:1 co-solvent on purity using heterogeneous ash derived Nipah fruit skin calcined at 500°C 4 hours. process variables were transesterification reaction time 60, 90, 120, 150 minutes, 1:19, 1:21, 1:23 with addition THF: v/v co-solvent. properties density, viscosity, moisture content, acid number evaluated compared Indonesian National Standard (SNI). obtained density 860.2 Kg/m3 viscosity 2.37 mm2/s. They contained 44.14% Palmitic 43.04% Octadecenoic (oleic), following maximum yield was 93.3598% oil: 60°C 120 TFT 1:1, 3% mass. results in indicate catalysts kapok produce Adding increase methyl ester so high obtained.