title: Modification of granular activated carbon using low molecular weight polymer for enhanced removal of Cu(2+) from aqueous solution.
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.
authors.affiliation: Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia. yinyang@salam.uitm.edu.my
authors.forename: C Y
authors.initials: CY
authors.lastname: Yin
authors.forename: M K
authors.initials: MK
authors.lastname: Aroua
authors.forename: W M A W
authors.initials: WM
authors.lastname: Daud
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D003300:Copper / Q000737:chemistry / Q000302:isolation & purification*; D008970:Molecular Weight; D011108:Polymers / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D011108:Polymers; D002606:Charcoal; D003300:Copper