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  • Title: Modification of granular activated carbon using low molecular weight polymer for enhanced removal of Cu(2+) from aqueous solution.
    Author: Yin CY, Aroua MK, Daud WM.
    Journal: Water Sci Technol; 2007; 56(9):95-101. PubMed ID: 18025736.
    Abstract:
    Palm shell activated carbon was modified via surface impregnation with polyethyleneimine (PEI) to enhance removal of Cu(2+) from aqueous solution in this study. The effect of PEI modification on batch adsorption of Cu(2+) as well as the equilibrium behavior of adsorption of metal ions on activated carbon were investigated. PEI modification clearly increased the Cu(2+) adsorption capacities by 68% and 75.86% for initial solution pH of 3 and 5 respectively. The adsorption data of Cu(2+) on both virgin and PEI-modified AC for both initial solution pH of 3 and 5 fitted the Langmuir and Redlich-Peterson isotherms considerably better than the Freundlich isotherm.
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