Extraction of cashew nut shell liquid (CNSL) using n-hexane as solvent in
batch extractor has been performed. The objective of this research was to evaluate
parameter that came up in a mathematical model. The parameter that would be evaluated
was transfer mass coefficient (Kca). The experiments were carried out in a three necks
glass as an extractor equipped with thermometer, mercury mixer, heater, and water
cooler. The extraction processes temperature was 67
O
C. Samples withdrawn at every 30
menit interval. The evaluation of CNSL in the samples were measured with gravimetry
method. The evaluation of experimental data shows that the mathematical model
proposed can describe the CNSL extraction. The transfer mass coefficient was related
with affected variables by
0604,2
2
i
6700,0
LL
2
ica
dN
V
S
3019,0
D
dk
µ
ρ
ρ
=
This equation was valid for ratio weight of seed to solvent volume range 40gr/300ml to
80gr/300ml and speed of agitation was 400 – 800 rpm.
Keywords : extraction, cashew nut shell liquid, Anacardum occidentale Lin
