Heavy Metals Removal by Thiol Modified Oak Charcoal: Adsorption Efficiency and Selectivity

Zeinab Ezzeddine


Herein, the adsorption of heavy metal ions thiol modified oak charcoal was investigated. The obtained modified charcoal has been characterized by X-ray diffraction, granulometric analysis and infrared spectroscopy. Then, its adsorption efficiency for the removal of Cd2+, Cu2+ and Pb2+ from aqueous solutions was tested. The effects of contact time, pH, electrolytes and initial metal ions concentration on metal ions removal were investigated. The adsorption capacities were high (197, 250 and 214 mg g-1 for Cd2+, Pb2+ and Cu2+ respectively). The selectivity was also dependent on the nature of metal ions and the functional group used. The mechanism of adsorption is complex where several types of interaction between metal ions and the adsorbent surface are involved.

DOI: http://doi.org/10.11591/ijaas.v10.i3.pp%25p


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International Journal of Advances in Applied Sciences (IJAAS)
p-ISSN 2252-8814, e-ISSN 2722-2594

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