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Heavy metal pollution has a severe repercussion on environment. Their occurrence in the body even in the trace concentrations results in neurological, behavioural and physiological problems. In the present study activated carbon was prepared out of Kashmiri walnut shell (Juglans regia) for assessing its adsorption removal capacity by treatment on to the standard solutions of heavy metal ions (Fe2+, Mn2+, Cu2+and Zn2+). For the adsorption experiments, standard solutions of 10, 20, 30, 40 and 50 ppm of the heavy metals were prepared. Column adsorption mechanism was done for the study process. The column having 1g of the absorbent was first washed with 0.1M HCl and 0.5M ammonia solutions. The column was finally washed with demineralised water. Then, 20 ml of different standard metal ion solutions (10-50 ppm) were passed through the column, separately. The filtrates were collected and analysed for the presence of heavy metal ions. The experimental finding revealed that activated carbon prepared out of walnut shell showed promising adsorption ability for the removal of heavy metals from aqueous phase. Adsorbing behaviour of activated carbon prepared, showed the trend of Fe2+> Mn2+ = Cu2+> Zn2+.
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