Modifikasi Biodiesel Melalui Reaksi Oksidasi Menggunakan Gelombang Ultrasonik
ABSTRACT: Biodiesel is an
alternative energy fuel that is sustainable and environmentally safe. However,
biodiesel has a higher cloud point than fuel diesel because it contains several
saturated fatty acids such as oleic acid, linoleic and linolenic acid so that biodiesel
tend to solidify at a temperature higher than the freezing point of diesel.
This study aims to modify biodiesel from candlenut oil (Aleurites moluccana)
through oxidation reaction by KMnO4 using ultrasonic equipment. The products
obtained were analyzed using FTIR and GCMS instrument. FTIR analysis showed
that spectral data of the four modified samples which run in 20, 30, 40 and 50
minutes practically similar. The methyl ester products are characterized by
typical bands at specific frequencies such as stretch of C = O; C-C; C-H (sp3)
and = C-H (sp2). Fragmentation patterns by GCMS showed that the oxidation
reaction in 20, 30, 40 and 50 minutes did not undergo bond disconnection. The
components produced is methyl palmitate, methyl linoleate, methyl oleate,
heksadekanoat acid, 9, 12 and 9,17oktadekadienal oktadekadienoat acid.
Penulis: Aisyah, Sappewali, Nurlina
Kode Jurnal: jpkimiadd130850
