FEBRIANA ERNI MARDI ASTUTIK Pengarang

Penggunaan Abu Batang Pisang sebagai Katalis Basa Heterogen dalam Reaksi Transesterifikasi Minyak Goreng Bekas pada Proses Pembuatan Biodiesel (Banana Stem Ash as Heterogeneous Base Catalyst in the Transesterification Reaction of Used Cooking Oil to Biodiesel Production Process) Febriana Erni Mardi Astutik Renewable Energy Engineering Program Department of Engineering ABSTRACT Biodiesel is an alternative fuel that is processed from vegetable oils and animal oils. Use of used cooking oil as a raw material can reduce the price of biodiesel production. High FFA levels on used cooking oil requires esterification reaction with H2SO4 catalyst and the transesterification reaction with a heterogeneous catalyst banana stem ash. Analysis in this study used a Completely Randomized Design with 2 factors are variations in the concentration of catalyst is composed of 3%, 7% and 11% w/v methanol and reaction time of 30, 45, and 60 minutes. The yield of biodiesel is the best in this study was 83% resulting from the transesterification reaction catalyst banana stem ash as much as 3% for 30 minutes. The resulting biodiesel has the characteristics which have largely been in accordance with SNI 04-7182-2006 include density of 0.85 g/cm3, 9.133 cSt viscosity, 177.5 °C flash point, 10.5 °C cloud point, -3 °C pour point and a water content of 0.015%. Keywords: Cooking Oil, Heterogeneous Base Catalyst, Biodiesel