The use of fly ash from the combustion of poultry litter for the adsorption of chromium(III) from aqueous solution

Fly ash, from the combustion of poultry litter, was assessed as an adsorbent for chromium(III) from aqueous solution. The adsorption process was studied as a function of temperature and time. Adsorption was best described by the Langmuir model. The adsorption of chromium(III) on the fly ash was endo...

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Bibliographic Details
Published in:Journal of chemical technology and biotechnology (1986) 2002-11, Vol.77 (11), p.1212-1218
Main Authors: Kelleher, Brian P, O'Callaghan, Marguerite N, Leahy, Martin J, O'Dwyer, Thomas F, Leahy, J J
Format: Article
Language:English
Subjects:
adsorption
Applied sciences
Chemistry
chromium(III)
Exact sciences and technology
fly ash
General and physical chemistry
Industrial wastewaters
Other industrial wastes. Sewage sludge
Pollution
poultry litter
Solid-liquid interface
Surface physical chemistry
Wastes
wastewater treatment
Wastewaters
Water treatment and pollution
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Summary:Fly ash, from the combustion of poultry litter, was assessed as an adsorbent for chromium(III) from aqueous solution. The adsorption process was studied as a function of temperature and time. Adsorption was best described by the Langmuir model. The adsorption of chromium(III) on the fly ash was endothermic and kinetic studies suggest that the overall rate of adsorption was pseudo‐second order. At low initial concentrations film diffusion effects contribute to limiting the overall rate of adsorption while at higher initial chromium(III) concentrations pore diffusion becomes more important. An adsorption capacity of 53 mg dm−3 was reached at 20 °C. © 2002 Society of Chemical Industry
ISSN:0268-2575
1097-4660
DOI:10.1002/jctb.689