Abstract:
The aim of this study was to determine the characteristics of the synthesized zeolite A
with variations in hydrothermal time and to determine the ability of the synthesized
zeolite A to adsorb lead(II) ions. The synthesis of zeolite A was carried out using the
alkaline hydrothermal fusion method with a Si/Al ratio of 1.25 and a variation of the
hydrothermal time used for 4; 6 and 8 hours. The synthesized zeolite A was applied to
adsorb lead(II) ions with several variations of adsorbent doses. Zeolite characterization
was carried out by FTIR analysis. FTIR analysis to determine the functional groups of
zeolite. The concentration of lead(II) ions was analyzed with an AAS instrument. The
results of the FTIR analysis showed that all the synthesized zeolite products had O-Si-O
groups, T-O strain asymmetry and double rings. The AAS results obtained the optimum
adsorbent dose of the synthesized zeolite used to adsorb lead(II) ions at a dose of 0.2
gram with an adsorption capacity and adsorption efficiency of 22.9025 mg/g and
96.38%, respectively. Based on these results, it was concluded that zeolite A
synthesized from oil palm shell fly ash has the potential as an adsorbent in adsorbing
lead(II) ions.
