Comparative study of efficiency biosorbents materials (almond, olive, and eucalyptus leaves) in removing of lead from laboratory aqueous solutions
The almond, olive and eucalyptus leaves were investigated as a low-cost biosorbents in removing lead ions
from laboratory aqueous solutions. The adsorption experiments were conducted at different lead concentrations,
and different biosorbent masses. The pH was adjusted to approximately 4.0, and contact time was 90 min. The
obtained filtrates were analyzed for Pb
content using a Flame Atomic Absorption Spectroscopy (AAS - 220
FS). The results showed similar behavior in respect of the amount of lead adsorbed (q), which were increased
with increasing lead concentrations (from approximately 2.0 – 790.0 mg/g), and it decreased with increasing
bioadsorbents masses (from approximately 196.0 – 9.8 mg/g). In contrast, the removal percentage was
relatively high and fluctuated between 67.4 – 99.6% for all biosorbents used in this study. The study deduced
that the biosorbents exhibited high efficiency and sustainability for removing Pb
+2
2+
from aqueous solution.
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