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Cow hoof as a low-cost adsorbent for comparative removal of cadmium and copper from simulated and industrial wastewater

Ilesanmi Osasona, Albert Ojo Adebayo, Afamefuna Elvis Okoronkwo,Olubode Ajayi, Jonhson Jonathan

Cow hoof was exploited as an adsorbent for removing Cd(II) and Cu(II) from aqueous solution through batch experiments. The optimum conditions established were applied to industrial wastewater. The removal efficiencies of this lowcost adsorbent recorded for aqueous solution were higher than those recorded for real industrial wastewater. The data obtained were best described by the pseudo-second-order kinetic equation. Equilibrium studies conducted at different temperatures were best described by Langmuir (Cd) while data obtained for Cu obeyed both Freundlichmodel. Evaluated thermodynamic parameters of the process showed that Cd(II) and Cu(II) removal was spontaneous and endothermic. Therefore, the use of cow hoof as a low-cost adsorbent to remove Cd(II) and Cu(II) from wastewater is feasible.