KINERJA ZEOLIT ALAM TERAKTIVASI PADA PENJERNIHAN MINYAK BEKAS PENGGORENGAN KERIPIK TEMPE
ABSTRACT: Used frying oil is
the oil that used repeatedly. This oil
has low quality physically and chemically.
This research was objected to purify used frying oil from tempeh chips
processing therefore it is suitable for consumption. The elucidated factors were HCl normality and
zeolite activation temperature. This
research used completely randomized design with two factors that arranged
factorially. The first factor was HCl
normality in zeolite soaking: without soaking (HCl 0 N), and soaking with HCl 2
N, 4 N, and 6 N. The second factor was
ziolite activation temperature: 3000C, 4000C, 5000C, dan 6000C.The result
showed that HCl normality and zeolite activation temperature were significantly
affected the performance of zeolite. The
color value, free fatty acid content, and anisidin value decreased as the HCl
normality and activation temperature increased.
It was supposed that the increasing HCl normality and activation
temperature caused the ratio of Si/Al increased. It affected the capability of zeolite for
adsorption. Meanwhile, the peroxide
value increased as the HCl normality increased due to increasing polarity that
caused by increasing Si/Al ratio. The
best characteristic of purified used frying oil was obtained from HCl 6 N and
activation temperature of 6000C with the characteristic as followed: color
value that indicated by absorbance at 500 nm of 0.491, free fatty acid content
of 0.5%, peroxide value of 0.094 meq/kg, and anisidine value of 43.92.
Keywords: used frying oil,
natural zeolite, activation
Penulis: Kgs Ahmadi
Kode Jurnal: jppertaniandd090018
