Journal article
Effect of impregnation of activated carbon with chelating polymer on adsorption kinetics of Pb2+
Journal of Hazardous Materials, Vol.166(2-3), pp.1526-1529
2009
Abstract
The effects of polyethyleneimine (PEI) impregnation on the Pb(2+) adsorption kinetics of palm shell-activated carbon and pH profile of bulk solution were investigated. Adsorption data were fitted to four established adsorption kinetics models, namely, pseudo-first-order, pseudo-second-order, Elovich equation and intraparticle diffusion. It was found that PEI impregnation at 16.68 and 29.82 wt% PEI/AC increased the Pb(2+) uptake rate while the opposite was observed for PEI impregnation at 4.76 and 8.41 wt% PEI/AC. The increased uptake rates were due to higher concentration of PEI molecules on the surface of clogged pores as well as varying pore volumes. The adsorption kinetics data fitted the pseudo-second-order model better than the pseudo-first-order model, implying chemisorption was the rate-controlling step. The bulk solution pH generally showed an increasing trend from the use of virgin to PEI-impregnated activated carbon.
Details
- Title
- Effect of impregnation of activated carbon with chelating polymer on adsorption kinetics of Pb2+
- Authors/Creators
- M.K. Aroua (Author/Creator)C-Y Yin (Author/Creator)F.N. Lim (Author/Creator)W.L. Kan (Author/Creator)W.M.A.W. Daud (Author/Creator)
- Publication Details
- Journal of Hazardous Materials, Vol.166(2-3), pp.1526-1529
- Publisher
- Elsevier BV
- Number of pages
- 4
- Identifiers
- 991005543388307891
- Copyright
- 2008 Elsevier B.V.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Citation topics
- 2 Chemistry
- 2.90 Water Treatment
- 2.90.27 Adsorption
- Web Of Science research areas
- Engineering, Environmental
- Environmental Sciences
- ESI research areas
- Engineering