CD Skripsi
Delignifikasi Batang Sawit Bebas Pati Dalam Media Asam Formiat
ABSTRACT
Oil palm trunk is a solid agricultural waste that has not been optimally utilized.
One of the uses of oil palm trunk is by taking starch to be used as raw material for
making bioplastics and dextrins. This experiment was intended to study the
possibility of using starch-free oil palm trunk as the alternative raw material in
the pulp industry and to determine the delignification rate of starch-free oil palm
trunk in formic acid. The experiment was carried out in batch on a laboratory
scale. The catalyst (HCl) concentration were studied at 0%, 0,05%, 0,10%, 0,15%
0,20%-weight at different reaction times (0, 5, 10, 15, 20, 30, 45, 60, 90, 120, and
180) minutes using 85%-weight formic acid as the solvent, and liquid to solid
ratio of 15:1. The results showed that starch-free oil palm trunk can be used as
the raw material for pulp using organosolv process with 32-70% pulp yield, 6-
15% pulp lignin content, and 90-98% a-cellulose content. The delignification
process mechanism is explained by two reaction models, namely parallel
reactions and first-order irreversible reactions.
Keywords: delignification mechanism, formic acid, orgnosolv, starch-free oil
palm trunk
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