PENGARUH PERBANDINGAN MOLAR DAN DURASI REAKSI TERHADAP RENDEMEN BIODIESEL DARI MINYAK KELAPA (Coconut Oil)

Risa Inggit Pramitha, Agus Haryanto, Sugeng Triyono

Abstract


This study aims to determine the effect of the molar ratio of oil : methanol and duration of the reaction on the
yield of biodiesel produced from palm oil transesterification. The transesterification reaction is carried out
using coconut oil at 60 °C and 0.5 grams of NaOH catalyst. The method is a completely randomized design with
a combination of two factors, namely the molar ratio and the duration of the reaction. The molar ratio consists
of four levels (1: 3, 1: 4, 1: 5 and 1: 6), while the duration of the reaction is composed of three levels (15, 30, and
60 minutes). Parameter observations include yield, density, and viscosity of biodiesel produced. Each unit of
experiment was performed using 100 ml of coconut oil and each treatment was repeated three times. The
results showed that duration factor significantly influence the yield and viscosity of biodiesel, while the molar
ratio factor significantly influence the viscosity of biodiesel. Interaction of these factors, however, do not affect
parameters observed. The highest yield of biodiesel (75.56%) resulted within duration of 60 minutes and
the lowest (60.27%) on within duration of 15 minutes. Biodiesel produced has a density of 0.86 to 0.87 g/ml
(complies SNI), and a viscosity of between 3.40 to 4.55 cSt

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