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Original Articles Open Access
This study investigated the removal of Cobalt ions from aqueous solution using Granular Activated Carbon (GAC) such as Filtrasorb-400 (F-400) in presence of different organic complexing agent, Batch mode experiments were carried out to obtain adsorption kinetics of Co2+ ions onto granular activated carbon F-400 loaded with Salicylic acid, 3,5-Dinitrosalicylic acid and 5-Sulphosalicylic acid one by one at constant temperature 25 ± 0.5 ºC and pH 5. Three different kinetic models namely pseudo first order, pseudo second order and Weber-Morris intra particle diffusion models were applied to experimental results. The experimental study revealed that 300 min of contact time was enough to achieve equilibrium for the adsorption of cobalt. The experimental results indicated a significant potential of the GAC as an adsorbent for cobalt ions removal.
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Author(s): R U Khope and N J Gawande
Adsorption, cobalt, Granular Activated Carbon, 3,5-Dinitrosalicylic acid,5-Sulphosalicylic acid, Salicylic acid., aqueous phase