Modification of granular activated carbon using low molecular weight polymer for enhanced removal of Cu2+ from aqueous solution

Palm shell activated carbon was modified via surface impregnation with polyethyleneimine (PEI) to enhance removal of Cu2 +  from aqueous solution in this study. The effect of PEI modification on batch adsorption of Cu2 +  as well as the equilibrium behavior of adsorption of metal ions on activated c...

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Bibliographic Details
Published in:Water science and technology 2007-01, Vol.56 (9), p.95-101
Main Authors: Yin, C.Y, Aroa, M.K, Daud, W.M.A.W
Format: Article
Language:English
Subjects:
Activated carbon
Adsorption
Aqueous solutions
Carbon
chelating agents
copper
Elaeis
granules
Isotherms
Metal ions
Metals
Molecular weight
nonfood plant products
pH effects
Polyethyleneimine
Polymers
Removal
wastewater treatment
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Summary:Palm shell activated carbon was modified via surface impregnation with polyethyleneimine (PEI) to enhance removal of Cu2 +  from aqueous solution in this study. The effect of PEI modification on batch adsorption of Cu2 +  as well as the equilibrium behavior of adsorption of metal ions on activated carbon were investigated. PEI modification clearly increased the Cu2 +  adsorption capacities by 68% and 75.86% for initial solution pH of 3 and 5 respectively. The adsorption data of Cu2 +  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.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2007.682