Open AccessHeavy metals removal by thiol modified oak charcoal: Adsorption efficiency and selectivity
Author(s) -
Zeinab Ezzeddine,
Batoul Solh,
Hussein Hamad
Publication year - 2021
Publication title -
international journal of advances in applied sciences
Language(s) - English
Resource type - Journals
eISSN - 2722-2594
pISSN - 2252-8814
DOI - 10.11591/ijaas.v10.i3.pp227-235
Subject(s) - adsorption , chemistry , selectivity , metal ions in aqueous solution , metal , thiol , activated charcoal , charcoal , inorganic chemistry , electrolyte , electrode , organic chemistry , catalysis
Herein, the removal of heavy metals on thiol modified oak charcoal was investigated. The modified charcoal was characterized by X-ray diffraction, granulometric analysis and infrared spectroscopy. Then, its adsorption efficiency for the removal of Cd2+, Cu2+ and Pb2+ from water was tested. The effects of several conditions on metals adsorption were investigated such as contact time, pH, electrolytes and the initial metal ions concentration. 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 metal ions nature 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.