Pengaruh Durasi, Suhu dan Rasio Reaktan Reaksi Transesterifikasi pada Kualitas Biodesel dari Minyak Biji Kesambi (Schleichera Oleosa Lour)

Abstract

Abstract. Kesambi oil (Schleichera oleosa Lour) is one of the potential raw materials for biodiesel production. The purpose of the study was to determine the factors that influence the process of making biodiesel from kesambi seed oil. Cassava seed oil was reacted with methanol, with a mass ratio of 7:2 using KOH as catalyst with 1%-ww of catalyst. The reaction was carried out using a stirred reactor operated for at a stirring speed with a reaction time of 45, 60, 75 and 90 minutes, with temperature variations of 55oC and 60oC. The quality of biodiesel was measured by viscosity, density, acid number and iodine number; while the transesterification performance was measured by % yield. Temperature and reaction time that provided biodiesel that met SNI 7182:2012 and gave the highest yield used for further experiments, it was best to re-produce biodiesel with a ratio of reactants mass ratio of kesambi seed oil and methanol 7:1,5;7:2, 5; and 7:3. Parameters measured were viscosity, density, acid number, iodine number and %yield. The biodiesel yield obtained at a temperature of 55oC with a reaction time of 60 minutes with a reactant ratio of 7:2, and at a reaction time of 90 minutes with a reactant ratio of 7:1,5, 7:2, 7:2.5 and 7:3 had density, viscosity, acid number and iodine number. met SNI 7182:2012,. %Yield with a reactant ratio of 7:2.5 is 92.07%, and transesterification at a temperature of 60oC did not produce biodiesel that met SNI 7182:2012.
 
 Keywords: biodiesel, reaction duration, reactant ratio, reaction temperature.