Uji Karakteristik Biodiesel Minyak Biji Nyamplung (Calophyllum inophyllum L.) dengan Variasi Konsentrasi Katalis pada Proses Transesterifikasi

Biodiesel characteristics test of nyamplung seed oil (Calophyllum inophyllum L.) was researched by using catalyst concentration variations of transesterification process. The purpose of research was to produce biodiesel from nyamplung seed oil. Furthermore, there were determined influence catalyst concentration such as: density, viscosity, calorie value, yield biodiesel, and composition of fatty acid by using GC-MS. The value of free fatty acid (FFA) was reduced to 1,46%. Biodiesel was made throught of esterification and transesterification process (ekstrans) at NaOH concentration 0,5%, 1%, 1,5%, and 2%, respectively. Based on the results of the study, the highest yield obtained at the concentration 1% nyamplung seed oil with the aquisition of 90,6%. Physical properties of biodiesel was determined by measuring of density was 896 kg/m3, viscosity was 4,7 mm2/s, and calorie value was 8556 kal/gr. Composition of fatty acid contained in methyl ester is methyl palmitate = 15,45%, methyl oleic = 35,51%, and methyl stearic = 28,30%