KARAKTERISASI BIODISEL DARI EKSTRAK MINYAK BIJI KARET BERKATALIS ZEOLIT DENGAN METODE GAS CHROMATOGRAPHY MASS SPECTROMETRY (GCMS)

Biodiesel is a renewable alternative energy that can reduce the quantity of diesel oil consumption from non-renewable oil. The purpose of this research is biodisel characteristic of rubber seed oil by using zeolite catalyst by Gas chromatography-mass spectrometry method. Stages in this research are extraction process, esterification and transesterification by using natural zeolit as catalyst. The result of analysis that has been done on the use of 1% catalyst yield 96,49% methyl ester with glycerol content 0,35%, catalyst 2,5% yield 94,69% methyl ester with glycerol content 0,67%, and at catalyst usage 3.5% yielded 97.50% methyl esters with a 0.08% glycerol content. When compared to SNI-7182-2006 quality standard on catalyst usage 3.5% of raw materials of methyl ester and glycerol content as well as testing the quality characteristics of biodiesel does not meet the standards