Water, Air, and Soil Pollution

, Volume 192, Issue 1, pp 337–348

Enhanced Adsorption of Metal Ions Onto Polyethyleneimine-Impregnated Palm Shell Activated Carbon: Equilibrium Studies

  • Chun Yang Yin
  • Mohamed Kheireddine Aroua
  • Wan Mohd Ashri Wan Daud
Article

DOI: 10.1007/s11270-008-9660-9

Cite this article as:
Yin, C.Y., Aroua, M.K. & Daud, W.M.A.W. Water Air Soil Pollut (2008) 192: 337. doi:10.1007/s11270-008-9660-9
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Abstract

In this study, palm shell activated carbon was impregnated with polyethyleneimine (PEI) and the effect of impregnation on batch adsorption of Ni2+, Cd2+or Pb2+ as well as the equilibrium behavior of adsorption of metal ions on PEI-impregnated AC were investigated. PEI impregnation evidently increased the single metal adsorption capacities of Ni2+ or Cd2+except for Pb2+, where its adsorption capacities were reduced by 16.67% and 19.55% for initial solution pH of 3 and 5 respectively. This suggested that PEI-impregnated AC could be used for selective separation of Pb2+ ions from other metal ions. The adsorption data of all the metal ions on both virgin and PEI-impregnated AC for both initial solution pH of 3 and 5 generally fitted the Langmuir and Redlich-Peterson isotherms considerably better than the Freundlich isotherm.

Keywords

AdsorptionIsothermsMetal ionsPalm shell activated carbonPolyethyleneimine

Nomenclature

A

Redlich–Peterson constant

B

Redlich–Peterson constant

Ce

equilibrium concentration, mg/l

C0

initial concentration, mg/l

G

Redlich–Peterson constant

K

Langmuir constant.

KF

Freundlich constant

M

weight of AC, g.

pHPZC

pH of point of zero charge

qe

equilibrium adsorption capacity, mg/g.

n

Freundlich constant

qm

adsorbate adsorbed per unit mass of adsorbent (monolayer adsorption), mg/g.

R2

correlation coefficient

V

volume, l.

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Chun Yang Yin
    • 1
  • Mohamed Kheireddine Aroua
    • 2
  • Wan Mohd Ashri Wan Daud
    • 2
  1. 1.Faculty of Chemical EngineeringUniversiti Teknologi MARASelangorMalaysia
  2. 2.Department of Chemical Engineering, Faculty of EngineeringUniversity of MalayaKuala LumpurMalaysia