Abstract:
The highest waste of crude pulm oil (CPO) refinery industry is spent bleaching
earth (SBE), which it usually handling by landfill. SBE still contain high vegetable
oil approximately 20-40%, and can be potential for utilized. This research aims is
to get the oil yield maximum by using solvent extraction under solvent and particle
size variations. Oil recovered of this process can be used as a raw material for
biodiesel production. Based on this result, it has been found that solvent and
particle size variations were influenced of the oil yield. The oil yield is 22.01%
whish obtained by using n-hexane, 19.58% by ethanol and 21.07% by acetone. The
particle size variations is affected to the oil yield, for example the oil yield of SBE
by using n-hexane are 18.57% for 60 mesh, 20.03% for 100 mesh, and 22.01% for
200 mesh. The analysed result of oil recovered under conditions n-hexane as a
solvent with 200 mesh particle size are water content 0.068%, density 880.3 kg/m3,
viscosity 45.69 cSt, and FFA content 14.50%. This oil properties is compared to
raw material and biodiesel standard will be concluded that the oil recovered of SBE
can be use as a raw material alternative for biodiesel production.
