Abstract
An inexpensive and efficient carbon materials as adsorbents were obtained from hazelnuts and walnuts waste shells. Their adsorption capacity with respect to iron(II) and cadmium(II) ions was studied. The results show that the carbonaceous material obtained from hazelnut shells has the best adsorption capacity with respect to Fe2+ & Cd2+, which is not inferior to commercial activated carbon. Studies of iron (II) and cadmium(II) of various concentrations showed that within 20-30 min, the best extraction rate and adsorption for both metal ions were achieved with a solution of 0.0025 M. For Fe2+ ions, the adsorption value and extraction rate have achieved good results at pH = 3-5, and for Cd2+ ions at pH = 5-6. Furthermore, the prepared adsorbent exhibited the excellent adsorption abilities even in the presence of various metal ions and successfully used as sorbents for drinking and wastewater treatment without modification and activation.
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