Inderscience Publishers

Utilisation of Andisols as possible low-cost adsorbent to remove Cr (VI) from aqueous solution

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The potential of using Andisols to remove Cr (VI) from aqueous solution was evaluated by batch and column experiments. The results showed that the A-horizons (Isarog: 63%; Mandalagan: 42%) of the soils have lower adsorption capacity compared to B-horizons (Isarog: 93%; Mandalagan: 66%) using a dose of 20 g/L and Cr (VI) concentration of 10 mg/L. The adsorption capacity of B-horizons using column experiments were also found to retain more Cr (VI) than batch technique. Hence, the B-horizon of the studied Andisols can be used as an effective adsorbent for Cr (VI) removal from contaminated water systems.

Keywords: hexavalent chromium, andisols, adsorption isotherms, acid treatment, chromium(IV) removal, water pollution

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