PEMBUATAN BIODIESEL DARI BIJI KEMIRI SUNAN

Abstract

Due to limitation of resources the availability offossil fuel is become decreasing, an alternative fuel is needed such as Aleurites trisperma Blancoseed before of big potential as source for plantation, the composition of seed kernel hasa high
level of oil (43.3%).
Biodiesel production process was done in the laboratory, its objective to establish the optimum condition. The addition of
catalyst H PO (degumming process) of 0,5%, 0,75%, 1%. The esterification treatment use a methanol catalyst mixture
of 10%, 15%, 20% with HCl and H SO of 0,5%, 0,75% and 1%. The transestrification treatment use a methanol
catalyst mixture of 10%, 15% and 20% with KOH and NaOH of 0,2%, 0,4%, 0,6%. Optimum results will be
apllied to biodiesel production in large scale.
In making Aleurites trisperma Blanco biodiesel which meet the Indonesian National Standard quality (SNI),
chemical used were mixture of methanol 20% (v/v) and catalys NaOH 0.6% (w/v), where resulting in biodiesel with
moisture content 0.05 %, acid number 0.76 mg KOH/g, free fatty acid content 0.38 %, density 865 kg/m , kinetic
viscocity at 40 C of 5.41 mm /s (cSt), base number 101.49 mg KOH/g, alcyl ester content 104.55% massa, iod
number 109.73 g I /100 g, cetana number 59,08, and yield of biodiesel oil 79.92 %.