KARAKTERISASI ADSORBEN Fe3O4/KARBON AKTIF PELEPAH KELAPA SAWIT (Elaeis gueneensis Jacq.)
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Date
2023-05
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Elfitra
Abstract
Synthesis of Fe3O4/activated carbon has been successfully carried out on a laboratory scale.
Activated carbon is made from palm fronds biomass by carbonization in a furnace at 600°C
for 1 hour, chemically activated using KOH activator with a weight ratio of charcoal and
KOH 1:3 and followed by calcination at 800°C for 30 minutes. Activated carbon was
modified by coprecipitation using FeCl3.6H2O and FeSO4.7H2O salts in a mole ratio (2:1)
by adding 5 M NaOH solution at 70°C to obtain Fe3O4/activated carbon adsorbents. The
results of the characterization of Fe3O4/activated carbon showed that the water content and
iodine adsorption capacity met the quality standards of activated carbon according to
SNI No.06-3730-1995, except for the ash content. The adsorption capacity of iodine
decreased after the activated carbon was modified with Fe3O4, but during the separation
process, the Fe3O4/activated carbon adsorbent more easily separated from solution than
activated carbon.
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Keywords
adsorbent, Fe3O4, carbonization, activated carbon, coprecipitation
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