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The aims for this studies was to determine the optimum reaction time of biodiesel from superworm (Zophobas morio L.) using H2SO4 catalyst by direct transesterification method. Reaction times 8, 12, 16, and 20 hours in two different conditions (comparison of hexane-methanol solvents 1:2 and 1:5) were investigated. The results of this study have not yet found optimal time in both conditions. It was found that the most potential condition of biodiesel products had fulfilled two of the three standard biodiesel parameters, was the condition of the comparison of hexane-methanol 1:5 solvents with a reaction time of 20 hours producing 20 mL biodiesel, density 0.8950 g mL, kinematic viscosity 12.17 cSt, and acid number 0,41 mg KOH/g sample. The GC-MS result showed the methyl ester from biodiesel product are contains methyl palmitate, methyl palmitoleate, methyl linoleic, and methyl stearat

Pembuatan Biodiesel dari Ulat Jerman (Zophobas morio L.) dengan Metode Transesterifikasi Langsung Menggunakan Pelarut N-Heksana Metanol