Abstract
The removal of Co(II) ions by two Cameroon clays – kaolinite and smectite as adsorbents – was investigated in a batch system. The effect of Co(II) ions initial concentration, Co, pH and contact time, t, has been studied in terms of kinetic models. The experimental data fitted well the pseudo-second order kinetic model allowing the rate constant to be evaluated. This study shows that these clays could be used as important efficient adsorbent materials for the uptake of Co(II) ions from aqueous solution at low initial concentrations. This study is important for the treatment of Co(II) ions effluent where continuous removal can be achieved on a large scale.
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